33121031012 has 12 divisors (see below), whose sum is σ = 58148178816. Its totient is φ = 16507265640.

The previous prime is 33121030991. The next prime is 33121031023. The reversal of 33121031012 is 21013012133.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13311068 + ... + 13313555.

It is an arithmetic number, because the mean of its divisors is an integer number (4845681568).

Almost surely, 2^33121031012 is an apocalyptic number.

It is an amenable number.

33121031012 is a deficient number, since it is larger than the sum of its proper divisors (25027147804).

33121031012 is a wasteful number, since it uses less digits than its factorization.

33121031012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26624938 (or 26624936 counting only the distinct ones).

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

Adding to 33121031012 its reverse (21013012133), we get a palindrome (54134043145).

The spelling of 33121031012 in words is "thirty-three billion, one hundred twenty-one million, thirty-one thousand, twelve".