33313121013 has 4 divisors (see below), whose sum is σ = 44417494688. Its totient is φ = 22208747340.

The previous prime is 33313120991. The next prime is 33313121033. The reversal of 33313121013 is 31012131333.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 33313121013 - 2²⁴ = 33296343797 is a prime.

It is a super-2 number, since 2×33313121013² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33313121033) 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, 5552186833 + ... + 5552186838.

It is an arithmetic number, because the mean of its divisors is an integer number (11104373672).

Almost surely, 2^33313121013 is an apocalyptic number.

It is an amenable number.

33313121013 is a deficient number, since it is larger than the sum of its proper divisors (11104373675).

33313121013 is a wasteful number, since it uses less digits than its factorization.

33313121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11104373674.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 33313121013 its reverse (31012131333), we get a palindrome (64325252346).

The spelling of 33313121013 in words is "thirty-three billion, three hundred thirteen million, one hundred twenty-one thousand, thirteen".