Is 2021 a prime number? What are the divisors of 2021?

## Is 2021 a prime number?

No, 2021 is not a prime number.

For example, 2021 can be divided by 43: 2021 / 43 = 47.

To be 2021 a prime number, it would have been required that 2021 has only two divisors, i.e., itself and 1.

## Parity of 2021

2021 is an odd number, because it is not evenly divisible by 2.

## Is 2021 a perfect square number?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 2021 is about 44.956.

Thus, the square root of 2021 is not an integer, and therefore 2021 is not a square number.

## What is the square number of 2021?

The square of a number (here 2021) is the result of the product of this number (2021) by itself (i.e., 2021 × 2021); the square of 2021 is sometimes called "raising 2021 to the power 2", or "2021 squared".

The square of 2021 is 4 084 441 because 2021 × 2021 = 20212 = 4 084 441.

As a consequence, 2021 is the square root of 4 084 441.

## Number of digits of 2021

2021 is a number with 4 digits.

## What are the multiples of 2021?

The multiples of 2021 are all integers evenly divisible by 2021, that is all numbers such that the remainder of the division by 2021 is zero. There are infinitely many multiples of 2021. The smallest multiples of 2021 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 2021 too, since 0 × 2021 = 0
• 2021: indeed, 2021 is a multiple of itself, since 2021 is evenly divisible by 2021 (we have 2021 / 2021 = 1, so the remainder of this division is indeed zero)
• 4 042: indeed, 4 042 = 2021 × 2
• 6 063: indeed, 6 063 = 2021 × 3
• 8 084: indeed, 8 084 = 2021 × 4
• 10 105: indeed, 10 105 = 2021 × 5
• etc.

## Nearest numbers from 2021

Find out whether some integer is a prime number