331321112121 has 8 divisors (see below), whose sum is σ = 441807428160. Its totient is φ = 220857768752.

The previous prime is 331321112113. The next prime is 331321112131. The reversal of 331321112121 is 121211123133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331321112121 - 2³ = 331321112113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331321112131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5709486 + ... + 5767223.

It is an arithmetic number, because the mean of its divisors is an integer number (55225928520).

Almost surely, 2^331321112121 is an apocalyptic number.

It is an amenable number.

331321112121 is a deficient number, since it is larger than the sum of its proper divisors (110486316039).

331321112121 is a wasteful number, since it uses less digits than its factorization.

331321112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11486335.

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

Adding to 331321112121 its reverse (121211123133), we get a palindrome (452532235254).

The spelling of 331321112121 in words is "three hundred thirty-one billion, three hundred twenty-one million, one hundred twelve thousand, one hundred twenty-one".