Knowing the size of very large numbers like a millinillion can be challenging. In this article, we’ll break down exactly what a millinillion is and provide comparisons to put its massive size into perspective.

## What is a Millinillion?

A millinillion is a very large number – specifically, it is equal to one thousand quindecillion. Let’s break that down step-by-step:

- 1 million = 1,000,000
- 1 billion = 1,000,000,000
- 1 trillion = 1,000,000,000,000
- 1 quadrillion = 1,000,000,000,000,000
- 1 quintillion = 1,000,000,000,000,000,000
- 1 sextillion = 1,000,000,000,000,000,000,000
- 1 septillion = 1,000,000,000,000,000,000,000,000
- 1 octillion = 1,000,000,000,000,000,000,000,000,000
- 1 nonillion = 1,000,000,000,000,000,000,000,000,000,000
- 1 decillion = 1,000,000,000,000,000,000,000,000,000,000,000

Now, a quindecillion is 1,000 quintillion. So a millinillion is 1,000 quindecillion, which is:

1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000

That’s one thousand sets of one thousand quintillion! As you can see, a millinillion is an incredibly large number.

## How Many Zeros are in a Millinillion?

One way to grasp the size of very large numbers is to count the number of zeros they contain. So how many zeros are in a millinillion?

Let’s break it down:

- 1 quintillion has 18 zeros
- 1 quindecillion has 48 zeros (1000 quintillion)
- 1 millinillion has 1,048 zeros (1000 quindecillion)

That’s over one thousand zeros in a millinillion! Written out, it would look like:

1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000

## Comparisons to Put a Millinillion in Perspective

Even just seeing all those zeros, it can still be hard to truly comprehend the vast size of a number like a millinillion. Let’s look at some comparisons to put it into perspective:

### Grains of Sand

Some estimates put the total number of grains of sand on Earth at around 7 quintillion. So a millinillion is 143 times more than all the grains of sand on our entire planet!

### Stars in the Observable Universe

Current best estimates say there are around 1 sextillion stars in the observable universe. That means a millinillion is 1 million times greater than the total number of stars we can see!

### Age of the Universe

The current estimated age of the universe is around 13.8 billion years. There are about 31.5 million seconds in a year. That comes out to about 434 quadrillion seconds since the Big Bang. A millinillion is over 2 million times longer than the age of the entire universe!

### National Debts

Country | National Debt (USD) |
---|---|

United States | $31 trillion |

Japan | $11 trillion |

China | $10 trillion |

United Kingdom | $3 trillion |

Even the massive national debts held by countries seem insignificant next to a millinillion. The United States debt of $31 trillion is only 0.0000031% of a millinillion!

### Seconds Since the Dawn of Humanity

Experts estimate that human civilization began around 6,000 BCE. There have been approximately 2.6 trillion seconds since then until now. But a millinillion is still 384,615 times greater than the total length of human civilization!

## Conclusion

A millinillion is an astronomically large number – far greater than amounts we normally encounter. Its sheer size is hard to imagine or visualize. But by looking at comparisons like total grains of sand, stars in the sky, length of time, and more, we start to get a sense of just how mind-bogglingly huge a millinillion really is. The next time you hear this number, remember there are over one thousand zeros contained in it!