331201213113321 has 12 divisors (see below), whose sum is σ = 478466114237748. Its totient is φ = 220771103220864.

The previous prime is 331201213113257. The next prime is 331201213113359. The reversal of 331201213113321 is 123311312102133.

331201213113321 is a `hidden beast` number, since 3 + 3 + 1 + 2 + 0 + 1 + 21 + 311 + 3 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 89351438802921 + 241849774310400 = 9452589^2 + 15551520^2 .

It is not a de Polignac number, because 331201213113321 - 2⁶ = 331201213113257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331201213113371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2475389500 + ... + 2475523293.

It is an arithmetic number, because the mean of its divisors is an integer number (39872176186479).

Almost surely, 2^{331201213113321} is an apocalyptic number.

It is an amenable number.

331201213113321 is a deficient number, since it is larger than the sum of its proper divisors (147264901124427).

331201213113321 is a wasteful number, since it uses less digits than its factorization.

331201213113321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4950920232 (or 4950920229 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

Adding to 331201213113321 its reverse (123311312102133), we get a palindrome (454512525215454).

The spelling of 331201213113321 in words is "three hundred thirty-one trillion, two hundred one billion, two hundred thirteen million, one hundred thirteen thousand, three hundred twenty-one".