Q: What is the negative version of the number 21,215,111?
A: -21,215,111
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:
| 21,215,109 | 21,215,110 | 21,215,112 | 21,215,113 |
| -21,215,109 | -21,215,110 | -21,215,112 | -21,215,113 |