Q: What is the negative version of the number 21,138,211?
A: -21,138,211
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:
| 21,138,209 | 21,138,210 | 21,138,212 | 21,138,213 |
| -21,138,209 | -21,138,210 | -21,138,212 | -21,138,213 |