33130021312 has 28 divisors (see below), whose sum is σ = 68009368680. Its totient is φ = 15993802496.

The previous prime is 33130021247. The next prime is 33130021333. The reversal of 33130021312 is 21312003133.

It is a self number, because there is not a number n which added to its sum of digits gives 33130021312.

It is a congruent number.

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, 8923258 + ... + 8926969.

Almost surely, 2^33130021312 is an apocalyptic number.

33130021312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

33130021312 is an abundant number, since it is smaller than the sum of its proper divisors (34879347368).

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

33130021312 is a wasteful number, since it uses less digits than its factorization.

33130021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17850268 (or 17850258 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 33130021312 its reverse (21312003133), we get a palindrome (54442024445).

The spelling of 33130021312 in words is "thirty-three billion, one hundred thirty million, twenty-one thousand, three hundred twelve".