331221231122321 has 8 divisors (see below), whose sum is σ = 348667036798080. Its totient is φ = 313776736376688.

The previous prime is 331221231122297. The next prime is 331221231122323. The reversal of 331221231122321 is 123221132122133.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331221231122321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331221231122323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327213881 + ... + 328224566.

It is an arithmetic number, because the mean of its divisors is an integer number (43583379599760).

Almost surely, 2^{331221231122321} is an apocalyptic number.

It is an amenable number.

331221231122321 is a deficient number, since it is larger than the sum of its proper divisors (17445805675759).

331221231122321 is a wasteful number, since it uses less digits than its factorization.

331221231122321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655465063.

The product of its digits is 5184, while the sum is 29.

Adding to 331221231122321 its reverse (123221132122133), we get a palindrome (454442363244454).

The spelling of 331221231122321 in words is "three hundred thirty-one trillion, two hundred twenty-one billion, two hundred thirty-one million, one hundred twenty-two thousand, three hundred twenty-one".