Q: What is the negative version of the number 21,191,911?
A: -21,191,911
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:
| 21,191,909 | 21,191,910 | 21,191,912 | 21,191,913 |
| -21,191,909 | -21,191,910 | -21,191,912 | -21,191,913 |