Q: What is the negative version of the number 221,515,405?
A: -221,515,405
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:
| 221,515,403 | 221,515,404 | 221,515,406 | 221,515,407 |
| -221,515,403 | -221,515,404 | -221,515,406 | -221,515,407 |