33313332121 has 4 divisors (see below), whose sum is σ = 33480736000. Its totient is φ = 33145928244.

The previous prime is 33313332113. The next prime is 33313332163. The reversal of 33313332121 is 12123331333.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12123331333 = 3559 ⋅3406387.

It is a cyclic number.

It is not a de Polignac number, because 33313332121 - 2³ = 33313332113 is a prime.

It is a super-2 number, since 2×33313332121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33313332721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83701641 + ... + 83702038.

It is an arithmetic number, because the mean of its divisors is an integer number (8370184000).

Almost surely, 2^33313332121 is an apocalyptic number.

It is an amenable number.

33313332121 is a deficient number, since it is larger than the sum of its proper divisors (167403879).

33313332121 is a wasteful number, since it uses less digits than its factorization.

33313332121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167403878.

The product of its digits is 2916, while the sum is 25.

Adding to 33313332121 its reverse (12123331333), we get a palindrome (45436663454).

The spelling of 33313332121 in words is "thirty-three billion, three hundred thirteen million, three hundred thirty-two thousand, one hundred twenty-one".