22112111121 has 4 divisors (see below), whose sum is σ = 29482814832. Its totient is φ = 14741407412.

The previous prime is 22112111107. The next prime is 22112111129. The reversal of 22112111121 is 12111121122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22112111121 - 2²³ = 22103722513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22112111121.

It is not an unprimeable number, because it can be changed into a prime (22112111129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3685351851 + ... + 3685351856.

It is an arithmetic number, because the mean of its divisors is an integer number (7370703708).

Almost surely, 2^22112111121 is an apocalyptic number.

It is an amenable number.

22112111121 is a deficient number, since it is larger than the sum of its proper divisors (7370703711).

22112111121 is an equidigital number, since it uses as much as digits as its factorization.

22112111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7370703710.

The product of its digits is 16, while the sum is 15.

Adding to 22112111121 its reverse (12111121122), we get a palindrome (34223232243).

The spelling of 22112111121 in words is "twenty-two billion, one hundred twelve million, one hundred eleven thousand, one hundred twenty-one".