331221202122133 has 4 divisors (see below), whose sum is σ = 331500242731680. Its totient is φ = 330942161512588.

The previous prime is 331221202122077. The next prime is 331221202122191.

331221202122133 is nontrivially palindromic in base 10.

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 a cyclic number.

It is not a de Polignac number, because 331221202122133 - 2²⁵ = 331221168567701 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 (331221202162133) 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, 139520302993 + ... + 139520305366.

It is an arithmetic number, because the mean of its divisors is an integer number (82875060682920).

Almost surely, 2^{331221202122133} is an apocalyptic number.

It is an amenable number.

331221202122133 is a deficient number, since it is larger than the sum of its proper divisors (279040609547).

331221202122133 is a wasteful number, since it uses less digits than its factorization.

331221202122133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279040609546.

The product of its (nonzero) digits is 5184, while the sum is 28.

It can be divided in two parts, 33122120 and 2122133, that added together give a palindrome (35244253).

The spelling of 331221202122133 in words is "three hundred thirty-one trillion, two hundred twenty-one billion, two hundred two million, one hundred twenty-two thousand, one hundred thirty-three".