"What is 21 to the 2nd power? (What is Twenty-one to the second power?)" is the math problem we are solving here. In mathematical terms, 21 is the base and 2 is the exponent as follows:
212
The problem above (21 to the 2nd power) means that you multiply 21 by itself. In other words, 21 × 21. When we do that, we get the answer as follows:
441
2nd Power Calculator
Here you can submit another base number that we will calculate to the 2nd power.