Q: What is the digital root of 100,021,213

 A: 1

Why is 1 the digital root of the number 100,021,213?

The digital root of a number is calculated by splitting the digits of a number and then adding them together. You keep splitting and adding the digits until you reach a single positive number.

How do you calculate the digital root of 100,021,213?


Split the number up and add each digit together:


1 + 0 + 0 + 0 + 2 + 1 + 2 + 1 + 3 = 10

If the answer is more than one digit, you would add each digit of the answer together again:

1 + 0 = 1

What is the digital root of number 100,021,213?

Answer: 1


More Examples

Number 100,021,211100,021,212100,021,214100,021,215
Digital Root 8923

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