How many zeros in billion trillion?

Answer 1

The easiest way to write that number only uses a single zero:

1 billion trillion = 1 x 1021

If it's a lot of zeros you're after, you ought to sit down one rainy afternoon,

take a piece of paper, and just write the number "one googol". That's a ' 1 ',

with a hundred zeros after it. (Don't forget to write the comma, before each

set of three zeros, starting at the end and working back towards the ' 1 '.)

1 billion = 1,000,000,000

1 trillion = 1,000,000,000,000

1 billion trillion = 1 trillion billion = 1,000,000,000,000,000,000,000