Is 21011 a prime number?

21 011 is an odd number, because it is not evenly divisible by 2.

Find out more:

• What is an even 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 21 011 is about 144.952.

Thus, the square root of 21 011 is not an integer, and therefore 21 011 is not a square number.

Anyway, 21 011 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 21 011) is the result of the product of this number (21 011) by itself (i.e., 21 011 × 21 011); the square of 21 011 is sometimes called "raising 21 011 to the power 2", or "21 011 squared".

The square of 21 011 is 441 462 121 because 21 011 × 21 011 = 21 011² = 441 462 121.

As a consequence, 21 011 is the square root of 441 462 121.

21 011 is a number with 5 digits.

The multiples of 21 011 are all integers evenly divisible by 21 011, that is all numbers such that the remainder of the division by 21 011 is zero. There are infinitely many multiples of 21 011. The smallest multiples of 21 011 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 21 011 too, since 0 × 21 011 = 0
• 21 011: indeed, 21 011 is a multiple of itself, since 21 011 is evenly divisible by 21 011 (we have 21 011 / 21 011 = 1, so the remainder of this division is indeed zero)
• 42 022: indeed, 42 022 = 21 011 × 2
• 63 033: indeed, 63 033 = 21 011 × 3
• 84 044: indeed, 84 044 = 21 011 × 4
• 105 055: indeed, 105 055 = 21 011 × 5
• etc.

• Preceding numbers: …21 009, 21 010
• Following numbers: 21 012, 21 013…

Nearest numbers from 21 011

• Preceding prime number: 21 001
• Following prime number: 21 013

• Is 0 a prime number?
• Is 1 a prime number?
• Is 2 a prime number?
• Is 2024 a prime number?
• Is 2025 a prime number?
• Is 4372 a prime number?

• Five thousand prime numbers

• Contact

• 21 011 est-il un nombre premier ?