Q: What is the negative version of the number 21,221,109?
A: -21,221,109
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:
| 21,221,107 | 21,221,108 | 21,221,110 | 21,221,111 |
| -21,221,107 | -21,221,108 | -21,221,110 | -21,221,111 |