22132111221 has 112 divisors (see below), whose sum is σ = 39426696000. Its totient is φ = 12266795520.

The previous prime is 22132111213. The next prime is 22132111289. The reversal of 22132111221 is 12211123122.

22132111221 is a `hidden beast` number, since 221 + 321 + 1 + 122 + 1 = 666.

It is not a de Polignac number, because 22132111221 - 2³ = 22132111213 is a prime.

It is a super-2 number, since 2×22132111221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22132111194 and 22132111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22132111121) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 4415965 + ... + 4420973.

Almost surely, 2^22132111221 is an apocalyptic number.

It is an amenable number.

22132111221 is a deficient number, since it is larger than the sum of its proper divisors (17294584779).

22132111221 is a wasteful number, since it uses less digits than its factorization.

22132111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5086 (or 5071 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 22132111221 its reverse (12211123122), we get a palindrome (34343234343).

The spelling of 22132111221 in words is "twenty-two billion, one hundred thirty-two million, one hundred eleven thousand, two hundred twenty-one".