Q: What is the negative version of the number 21,621,551?
A: -21,621,551
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 21,621,549 | 21,621,550 | 21,621,552 | 21,621,553 |
| -21,621,549 | -21,621,550 | -21,621,552 | -21,621,553 |