22222012111 has 16 divisors (see below), whose sum is σ = 25355834784. Its totient is φ = 19293272064.

The previous prime is 22222012067. The next prime is 22222012157. The reversal of 22222012111 is 11121022222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22222012111 - 2²⁵ = 22188457679 is a prime.

It is a super-2 number, since 2×22222012111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222012411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310840 + ... + 375586.

It is an arithmetic number, because the mean of its divisors is an integer number (1584739674).

Almost surely, 2^22222012111 is an apocalyptic number.

22222012111 is a deficient number, since it is larger than the sum of its proper divisors (3133822673).

22222012111 is a wasteful number, since it uses less digits than its factorization.

22222012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66330.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22222012111 its reverse (11121022222), we get a palindrome (33343034333).

The spelling of 22222012111 in words is "twenty-two billion, two hundred twenty-two million, twelve thousand, one hundred eleven".