Q: What is the negative version of the number 21,215,619?
A: -21,215,619
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:
| 21,215,617 | 21,215,618 | 21,215,620 | 21,215,621 |
| -21,215,617 | -21,215,618 | -21,215,620 | -21,215,621 |