221131133223 has 64 divisors (see below), whose sum is σ = 419157752832. Its totient is φ = 99799418880.

The previous prime is 221131133203. The next prime is 221131133227. The reversal of 221131133223 is 322331131122.

It is not a de Polignac number, because 221131133223 - 2²⁶ = 221064024359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221131133193 and 221131133202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221131133227) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2114736 + ... + 2216837.

It is an arithmetic number, because the mean of its divisors is an integer number (6549339888).

Almost surely, 2^221131133223 is an apocalyptic number.

221131133223 is a deficient number, since it is larger than the sum of its proper divisors (198026619609).

221131133223 is a wasteful number, since it uses less digits than its factorization.

221131133223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4331624.

The product of its digits is 1296, while the sum is 24.

Adding to 221131133223 its reverse (322331131122), we get a palindrome (543462264345).

The spelling of 221131133223 in words is "two hundred twenty-one billion, one hundred thirty-one million, one hundred thirty-three thousand, two hundred twenty-three".