33112121312 has 24 divisors (see below), whose sum is σ = 65219791392. Its totient is φ = 16548364800.

The previous prime is 33112121311. The next prime is 33112121347. The reversal of 33112121312 is 21312121133.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33112121311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170264 + ... + 308567.

It is an arithmetic number, because the mean of its divisors is an integer number (2717491308).

Almost surely, 2^33112121312 is an apocalyptic number.

33112121312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

33112121312 is a deficient number, since it is larger than the sum of its proper divisors (32107670080).

33112121312 is a wasteful number, since it uses less digits than its factorization.

33112121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481002 (or 480994 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 33112121312 its reverse (21312121133), we get a palindrome (54424242445).

The spelling of 33112121312 in words is "thirty-three billion, one hundred twelve million, one hundred twenty-one thousand, three hundred twelve".