Q: What is the negative version of the number 221,621,401?
A: -221,621,401
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:
| 221,621,399 | 221,621,400 | 221,621,402 | 221,621,403 |
| -221,621,399 | -221,621,400 | -221,621,402 | -221,621,403 |