Q: What is the negative version of the number 221,521,220?
A: -221,521,220
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:
| 221,521,218 | 221,521,219 | 221,521,221 | 221,521,222 |
| -221,521,218 | -221,521,219 | -221,521,221 | -221,521,222 |