331311221121 has 16 divisors (see below), whose sum is σ = 445152153600. Its totient is φ = 219172458960.

The previous prime is 331311221119. The next prime is 331311221149. The reversal of 331311221121 is 121122113133.

It is not a de Polignac number, because 331311221121 - 2¹ = 331311221119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331311221921) 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, 8746180 + ... + 8783978.

It is an arithmetic number, because the mean of its divisors is an integer number (27822009600).

Almost surely, 2^331311221121 is an apocalyptic number.

It is an amenable number.

331311221121 is a deficient number, since it is larger than the sum of its proper divisors (113840932479).

331311221121 is a wasteful number, since it uses less digits than its factorization.

331311221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60236.

The product of its digits is 216, while the sum is 21.

Adding to 331311221121 its reverse (121122113133), we get a palindrome (452433334254).

The spelling of 331311221121 in words is "three hundred thirty-one billion, three hundred eleven million, two hundred twenty-one thousand, one hundred twenty-one".