Q: What is the negative version of the number 21,191,907?
A: -21,191,907
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:
| 21,191,905 | 21,191,906 | 21,191,908 | 21,191,909 |
| -21,191,905 | -21,191,906 | -21,191,908 | -21,191,909 |