Q: What is the negative version of the number 221,634,639?
A: -221,634,639
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:
| 221,634,637 | 221,634,638 | 221,634,640 | 221,634,641 |
| -221,634,637 | -221,634,638 | -221,634,640 | -221,634,641 |