Q: What is the negative version of the number 21,511,213?
A: -21,511,213
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:
| 21,511,211 | 21,511,212 | 21,511,214 | 21,511,215 |
| -21,511,211 | -21,511,212 | -21,511,214 | -21,511,215 |