33231120012 has 18 divisors (see below), whose sum is σ = 84000886788. Its totient is φ = 11077039992.

The previous prime is 33231120007. The next prime is 33231120053. The reversal of 33231120012 is 21002113233.

33231120012 is a `hidden beast` number, since 332 + 311 + 20 + 0 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×33231120012² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 461543298 + ... + 461543369.

Almost surely, 2^33231120012 is an apocalyptic number.

It is an amenable number.

33231120012 is an abundant number, since it is smaller than the sum of its proper divisors (50769766776).

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

33231120012 is a wasteful number, since it uses less digits than its factorization.

33231120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923086677 (or 923086672 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 33231120012 its reverse (21002113233), we get a palindrome (54233233245).

The spelling of 33231120012 in words is "thirty-three billion, two hundred thirty-one million, one hundred twenty thousand, twelve".