331133232221 has 8 divisors (see below), whose sum is σ = 361240686144. Its totient is φ = 301026517120.

The previous prime is 331133232217. The next prime is 331133232247. The reversal of 331133232221 is 122232331133.

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 331133232221 - 2² = 331133232217 is a prime.

It is a super-2 number, since 2×331133232221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331133232271) 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, 1211021 + ... + 1459053.

It is an arithmetic number, because the mean of its divisors is an integer number (45155085768).

Almost surely, 2^331133232221 is an apocalyptic number.

It is an amenable number.

331133232221 is a deficient number, since it is larger than the sum of its proper divisors (30107453923).

331133232221 is a wasteful number, since it uses less digits than its factorization.

331133232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369411.

The product of its digits is 3888, while the sum is 26.

Adding to 331133232221 its reverse (122232331133), we get a palindrome (453365563354).

The spelling of 331133232221 in words is "three hundred thirty-one billion, one hundred thirty-three million, two hundred thirty-two thousand, two hundred twenty-one".