22122111 has 16 divisors (see below), whose sum is σ = 32514048. Its totient is φ = 13267200.

The previous prime is 22122103. The next prime is 22122169. The reversal of 22122111 is 11122122.

It is not a de Polignac number, because 22122111 - 2³ = 22122103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122011) 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, 255 + ... + 6656.

It is an arithmetic number, because the mean of its divisors is an integer number (2032128).

Almost surely, 2^22122111 is an apocalyptic number.

22122111 is a deficient number, since it is larger than the sum of its proper divisors (10391937).

22122111 is a wasteful number, since it uses less digits than its factorization.

22122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7022.

The product of its digits is 16, while the sum is 12.

The square root of 22122111 is about 4703.4148232959. The cubic root of 22122111 is about 280.7214008184.

Adding to 22122111 its reverse (11122122), we get a palindrome (33244233).

It can be divided in two parts, 22122 and 111, that multiplied together give a palindrome (2455542).

The spelling of 22122111 in words is "twenty-two million, one hundred twenty-two thousand, one hundred eleven".