33121321123312 has 40 divisors (see below), whose sum is σ = 67023381371904. Its totient is φ = 15826270240704.

The previous prime is 33121321123307. The next prime is 33121321123321. The reversal of 33121321123312 is 21332112312133.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40393548 + ... + 41205355.

Almost surely, 2^{33121321123312} is an apocalyptic number.

It is an amenable number.

33121321123312 is an abundant number, since it is smaller than the sum of its proper divisors (33902060248592).

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

33121321123312 is a wasteful number, since it uses less digits than its factorization.

33121321123312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81600037 (or 81600031 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

Adding to 33121321123312 its reverse (21332112312133), we get a palindrome (54453433435445).

It can be divided in two parts, 331213 and 21123312, that added together give a triangular number (21454525 = T₆₅₅₀).

The spelling of 33121321123312 in words is "thirty-three trillion, one hundred twenty-one billion, three hundred twenty-one million, one hundred twenty-three thousand, three hundred twelve".