221332310131 has 8 divisors (see below), whose sum is σ = 221832970128. Its totient is φ = 220831740000.

The previous prime is 221332310083. The next prime is 221332310149. The reversal of 221332310131 is 131013233122.

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 221332310131 - 2²⁷ = 221198092403 is a prime.

It is a super-2 number, since 2×221332310131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221332310231) 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, 8492901 + ... + 8518921.

It is an arithmetic number, because the mean of its divisors is an integer number (27729121266).

Almost surely, 2^221332310131 is an apocalyptic number.

221332310131 is a deficient number, since it is larger than the sum of its proper divisors (500659997).

221332310131 is a wasteful number, since it uses less digits than its factorization.

221332310131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44933.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 221332310131 its reverse (131013233122), we get a palindrome (352345543253).

The spelling of 221332310131 in words is "two hundred twenty-one billion, three hundred thirty-two million, three hundred ten thousand, one hundred thirty-one".