22122211111 has 48 divisors (see below), whose sum is σ = 30034089792. Its totient is φ = 15855459840.

The previous prime is 22122211099. The next prime is 22122211123. The reversal of 22122211111 is 11111222122.

It is an interprime number because it is at equal distance from previous prime (22122211099) and next prime (22122211123).

It is not a de Polignac number, because 22122211111 - 2⁵ = 22122211079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122211511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3222795 + ... + 3229651.

It is an arithmetic number, because the mean of its divisors is an integer number (625710204).

Almost surely, 2^22122211111 is an apocalyptic number.

22122211111 is a deficient number, since it is larger than the sum of its proper divisors (7911878681).

22122211111 is a wasteful number, since it uses less digits than its factorization.

22122211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7192 (or 7181 counting only the distinct ones).

The product of its digits is 32, while the sum is 16.

Adding to 22122211111 its reverse (11111222122), we get a palindrome (33233433233).

It can be divided in two parts, 221222111 and 11, that added together give a palindrome (221222122).

The spelling of 22122211111 in words is "twenty-two billion, one hundred twenty-two million, two hundred eleven thousand, one hundred eleven".