33312231012 has 12 divisors (see below), whose sum is σ = 77728539056. Its totient is φ = 11104077000.

The previous prime is 33312230977. The next prime is 33312231049. The reversal of 33312231012 is 21013221333.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×33312231012² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33312231012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388009614 + ... + 1388009637.

Almost surely, 2^33312231012 is an apocalyptic number.

It is an amenable number.

33312231012 is an abundant number, since it is smaller than the sum of its proper divisors (44416308044).

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

33312231012 is a wasteful number, since it uses less digits than its factorization.

33312231012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776019258 (or 2776019256 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 33312231012 its reverse (21013221333), we get a palindrome (54325452345).

The spelling of 33312231012 in words is "thirty-three billion, three hundred twelve million, two hundred thirty-one thousand, twelve".