331221033221311 has 8 divisors (see below), whose sum is σ = 340147399757264. Its totient is φ = 322350282676800.

The previous prime is 331221033221261. The next prime is 331221033221317. The reversal of 331221033221311 is 113122330122133.

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 331221033221311 - 2¹⁵ = 331221033188543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331221033221311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331221033221317) 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, 13903985790 + ... + 13904009611.

It is an arithmetic number, because the mean of its divisors is an integer number (42518424969658).

Almost surely, 2^{331221033221311} is an apocalyptic number.

331221033221311 is a deficient number, since it is larger than the sum of its proper divisors (8926366535953).

331221033221311 is a wasteful number, since it uses less digits than its factorization.

331221033221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27807995721.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 331221033221311 its reverse (113122330122133), we get a palindrome (444343363343444).

The spelling of 331221033221311 in words is "three hundred thirty-one trillion, two hundred twenty-one billion, thirty-three million, two hundred twenty-one thousand, three hundred eleven".