Q: What is the negative version of the number 21,210,399?
A: -21,210,399
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:
| 21,210,397 | 21,210,398 | 21,210,400 | 21,210,401 |
| -21,210,397 | -21,210,398 | -21,210,400 | -21,210,401 |