331330130021 has 12 divisors (see below), whose sum is σ = 377849592960. Its totient is φ = 288113151480.

The previous prime is 331330129987. The next prime is 331330130051. The reversal of 331330130021 is 120031033133.

It is not a de Polignac number, because 331330130021 - 2³⁰ = 330256388197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331330129975 and 331330130002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331330130051) 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, 28463861 + ... + 28475498.

It is an arithmetic number, because the mean of its divisors is an integer number (31487466080).

Almost surely, 2^331330130021 is an apocalyptic number.

It is an amenable number.

331330130021 is a deficient number, since it is larger than the sum of its proper divisors (46519462939).

331330130021 is a wasteful number, since it uses less digits than its factorization.

331330130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56939416 (or 56939393 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 331330130021 its reverse (120031033133), we get a palindrome (451361163154).

The spelling of 331330130021 in words is "three hundred thirty-one billion, three hundred thirty million, one hundred thirty thousand, twenty-one".