221031200113320 has 128 divisors (see below), whose sum is σ = 692593585516800. Its totient is φ = 56324394153984.

The previous prime is 221031200113291. The next prime is 221031200113327. The reversal of 221031200113320 is 23311002130122.

It is a super-2 number, since 2×221031200113320² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221031200113327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35911635 + ... + 41613794.

It is an arithmetic number, because the mean of its divisors is an integer number (5410887386850).

Almost surely, 2^{221031200113320} is an apocalyptic number.

221031200113320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221031200113320 is an abundant number, since it is smaller than the sum of its proper divisors (471562385403480).

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

221031200113320 is a wasteful number, since it uses less digits than its factorization.

221031200113320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77526499 (or 77526495 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 221031200113320 its reverse (23311002130122), we get a palindrome (244342202243442).

The spelling of 221031200113320 in words is "two hundred twenty-one trillion, thirty-one billion, two hundred million, one hundred thirteen thousand, three hundred twenty".