33312012 has 12 divisors (see below), whose sum is σ = 77728056. Its totient is φ = 11104000.

The previous prime is 33312001. The next prime is 33312029. The reversal of 33312012 is 21021333.

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

It is a super-2 number, since 2×33312012² = 2219380286976288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33311982 and 33312000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387989 + ... + 1388012.

It is an arithmetic number, because the mean of its divisors is an integer number (6477338).

Almost surely, 2^33312012 is an apocalyptic number.

It is an amenable number.

33312012 is an abundant number, since it is smaller than the sum of its proper divisors (44416044).

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

33312012 is a wasteful number, since it uses less digits than its factorization.

33312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776008 (or 2776006 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 33312012 is about 5771.6559149000. The cubic root of 33312012 is about 321.7611618297.

Adding to 33312012 its reverse (21021333), we get a palindrome (54333345).

The spelling of 33312012 in words is "thirty-three million, three hundred twelve thousand, twelve".