332890021 has 2 divisors, whose sum is σ = 332890022. Its totient is φ = 332890020.

The previous prime is 332890003. The next prime is 332890027. The reversal of 332890021 is 120098233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191517921 + 141372100 = 13839^2 + 11890^2 .

It is a cyclic number.

It is not a de Polignac number, because 332890021 - 2¹⁵ = 332857253 is a prime.

It is a super-2 number, since 2×332890021² = 221631532162760882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (332890027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166445010 + 166445011.

It is an arithmetic number, because the mean of its divisors is an integer number (166445011).

Almost surely, 2^332890021 is an apocalyptic number.

It is an amenable number.

332890021 is a deficient number, since it is larger than the sum of its proper divisors (1).

332890021 is an equidigital number, since it uses as much as digits as its factorization.

332890021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 332890021 is about 18245.2739360087. The cubic root of 332890021 is about 693.0537623821.

The spelling of 332890021 in words is "three hundred thirty-two million, eight hundred ninety thousand, twenty-one".