Q: What is the negative version of the number 13,221,515?
A: -13,221,515
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:
| 13,221,513 | 13,221,514 | 13,221,516 | 13,221,517 |
| -13,221,513 | -13,221,514 | -13,221,516 | -13,221,517 |