332121997 has 2 divisors, whose sum is σ = 332121998. Its totient is φ = 332121996.

The previous prime is 332121989. The next prime is 332122031. The reversal of 332121997 is 799121233.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 327935881 + 4186116 = 18109^2 + 2046^2 .

It is a cyclic number.

It is not a de Polignac number, because 332121997 - 2³ = 332121989 is a prime.

It is a super-2 number, since 2×332121997² = 220610041782536018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (332121917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166060998 + 166060999.

It is an arithmetic number, because the mean of its divisors is an integer number (166060999).

Almost surely, 2^332121997 is an apocalyptic number.

It is an amenable number.

332121997 is a deficient number, since it is larger than the sum of its proper divisors (1).

332121997 is an equidigital number, since it uses as much as digits as its factorization.

332121997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 37.

The square root of 332121997 is about 18224.2145784119. The cubic root of 332121997 is about 692.5203611941.

The spelling of 332121997 in words is "three hundred thirty-two million, one hundred twenty-one thousand, nine hundred ninety-seven".