22112122111 has 2 divisors, whose sum is σ = 22112122112. Its totient is φ = 22112122110.

The previous prime is 22112122093. The next prime is 22112122127. The reversal of 22112122111 is 11122121122.

It is an a-pointer prime, because the next prime (22112122127) can be obtained adding 22112122111 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22112122111 - 2³³ = 13522187519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22112122181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11056061055 + 11056061056.

It is an arithmetic number, because the mean of its divisors is an integer number (11056061056).

Almost surely, 2^22112122111 is an apocalyptic number.

22112122111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22112122111 is an equidigital number, since it uses as much as digits as its factorization.

22112122111 is an evil number, because the sum of its binary digits is even.

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

Adding to 22112122111 its reverse (11122121122), we get a palindrome (33234243233).

The spelling of 22112122111 in words is "twenty-two billion, one hundred twelve million, one hundred twenty-two thousand, one hundred eleven".