Q: What is the negative version of the number 21,681,820?
A: -21,681,820
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:
| 21,681,818 | 21,681,819 | 21,681,821 | 21,681,822 |
| -21,681,818 | -21,681,819 | -21,681,821 | -21,681,822 |