Q: What is the negative version of the number 21,720,170?
A: -21,720,170
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:
| 21,720,168 | 21,720,169 | 21,720,171 | 21,720,172 |
| -21,720,168 | -21,720,169 | -21,720,171 | -21,720,172 |