Q: What is the negative version of the number 21,513,501?
A: -21,513,501
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:
| 21,513,499 | 21,513,500 | 21,513,502 | 21,513,503 |
| -21,513,499 | -21,513,500 | -21,513,502 | -21,513,503 |