Q: What is the negative version of the number 21,512,919?
A: -21,512,919
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:
| 21,512,917 | 21,512,918 | 21,512,920 | 21,512,921 |
| -21,512,917 | -21,512,918 | -21,512,920 | -21,512,921 |