331122102220121 has 4 divisors (see below), whose sum is σ = 331122183061632. Its totient is φ = 331122021378612.

The previous prime is 331122102220079. The next prime is 331122102220141. The reversal of 331122102220121 is 121022201221133.

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 a de Polignac number, because none of the positive numbers 2^k-331122102220121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (331122102220141) 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, 33929345 + ... + 42584558.

It is an arithmetic number, because the mean of its divisors is an integer number (82780545765408).

Almost surely, 2^{331122102220121} is an apocalyptic number.

It is an amenable number.

331122102220121 is a deficient number, since it is larger than the sum of its proper divisors (80841511).

331122102220121 is an equidigital number, since it uses as much as digits as its factorization.

331122102220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80841510.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 331122102220121 its reverse (121022201221133), we get a palindrome (452144303441254).

The spelling of 331122102220121 in words is "three hundred thirty-one trillion, one hundred twenty-two billion, one hundred two million, two hundred twenty thousand, one hundred twenty-one".