Q: What is the negative version of the number 21,521,431?
A: -21,521,431
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:
| 21,521,429 | 21,521,430 | 21,521,432 | 21,521,433 |
| -21,521,429 | -21,521,430 | -21,521,432 | -21,521,433 |