Q: What is the negative version of the number 21,501,451?
A: -21,501,451
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:
| 21,501,449 | 21,501,450 | 21,501,452 | 21,501,453 |
| -21,501,449 | -21,501,450 | -21,501,452 | -21,501,453 |