33121013120 has 64 divisors (see below), whose sum is σ = 85270706640. Its totient is φ = 12229294080.

The previous prime is 33121013099. The next prime is 33121013137. The reversal of 33121013120 is 2131012133.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1982126 + ... + 1998765.

Almost surely, 2^33121013120 is an apocalyptic number.

It is an amenable number.

33121013120 is an abundant number, since it is smaller than the sum of its proper divisors (52149693520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33121013120 is a wasteful number, since it uses less digits than its factorization.

33121013120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3980923 (or 3980911 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 33121013120 its reverse (2131012133), we get a palindrome (35252025253).

The spelling of 33121013120 in words is "thirty-three billion, one hundred twenty-one million, thirteen thousand, one hundred twenty".