331320112021 has 32 divisors (see below), whose sum is σ = 354556051200. Its totient is φ = 309085916160.

The previous prime is 331320111979. The next prime is 331320112031. The reversal of 331320112021 is 120211023133.

It is not a de Polignac number, because 331320112021 - 2⁹ = 331320111509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331320112021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331320112031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40935051 + ... + 40943143.

It is an arithmetic number, because the mean of its divisors is an integer number (11079876600).

Almost surely, 2^331320112021 is an apocalyptic number.

It is an amenable number.

331320112021 is a deficient number, since it is larger than the sum of its proper divisors (23235939179).

331320112021 is a wasteful number, since it uses less digits than its factorization.

331320112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8589.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 331320112021 its reverse (120211023133), we get a palindrome (451531135154).

The spelling of 331320112021 in words is "three hundred thirty-one billion, three hundred twenty million, one hundred twelve thousand, twenty-one".