221120131013312 has 56 divisors (see below), whose sum is σ = 442817720611200. Its totient is φ = 109544044087296.

The previous prime is 221120131013227. The next prime is 221120131013357. The reversal of 221120131013312 is 213310131021122.

It is a happy number.

It is a super-2 number, since 2×221120131013312² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527797073 + ... + 528215855.

Almost surely, 2^{221120131013312} is an apocalyptic number.

It is an amenable number.

221120131013312 is an abundant number, since it is smaller than the sum of its proper divisors (221697589597888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221120131013312 is a wasteful number, since it uses less digits than its factorization.

221120131013312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494593 (or 494583 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 221120131013312 its reverse (213310131021122), we get a palindrome (434430262034434).

The spelling of 221120131013312 in words is "two hundred twenty-one trillion, one hundred twenty billion, one hundred thirty-one million, thirteen thousand, three hundred twelve".