33121112021213 has 16 divisors (see below), whose sum is σ = 33565817671680. Its totient is φ = 32677048325376.

The previous prime is 33121112021189. The next prime is 33121112021267. The reversal of 33121112021213 is 31212021112133.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 33121112021213 - 2⁸ = 33121112020957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33121114021213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1394972420 + ... + 1394996162.

It is an arithmetic number, because the mean of its divisors is an integer number (2097863604480).

Almost surely, 2^{33121112021213} is an apocalyptic number.

It is an amenable number.

33121112021213 is a deficient number, since it is larger than the sum of its proper divisors (444705650467).

33121112021213 is a wasteful number, since it uses less digits than its factorization.

33121112021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36476.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 33121112021213 its reverse (31212021112133), we get a palindrome (64333133133346).

The spelling of 33121112021213 in words is "thirty-three trillion, one hundred twenty-one billion, one hundred twelve million, twenty-one thousand, two hundred thirteen".