332240021 has 2 divisors, whose sum is σ = 332240022. Its totient is φ = 332240020.

The previous prime is 332240011. The next prime is 332240047. The reversal of 332240021 is 120042233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260176900 + 72063121 = 16130^2 + 8489^2 .

It is a cyclic number.

It is not a de Polignac number, because 332240021 - 2¹⁴ = 332223637 is a prime.

It is a super-2 number, since 2×332240021² = 220766863108160882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (332240011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166120010 + 166120011.

It is an arithmetic number, because the mean of its divisors is an integer number (166120011).

Almost surely, 2^332240021 is an apocalyptic number.

It is an amenable number.

332240021 is a deficient number, since it is larger than the sum of its proper divisors (1).

332240021 is an equidigital number, since it uses as much as digits as its factorization.

332240021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 332240021 is about 18227.4524001573. The cubic root of 332240021 is about 692.6023836076.

Adding to 332240021 its reverse (120042233), we get a palindrome (452282254).

The spelling of 332240021 in words is "three hundred thirty-two million, two hundred forty thousand, twenty-one".