Q: What is the negative version of the number 21,015,251?
A: -21,015,251
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:
| 21,015,249 | 21,015,250 | 21,015,252 | 21,015,253 |
| -21,015,249 | -21,015,250 | -21,015,252 | -21,015,253 |