Q: What is the negative version of the number 21,516,991?
A: -21,516,991
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:
| 21,516,989 | 21,516,990 | 21,516,992 | 21,516,993 |
| -21,516,989 | -21,516,990 | -21,516,992 | -21,516,993 |