22113111121 has 4 divisors (see below), whose sum is σ = 22393024000. Its totient is φ = 21833198244.

The previous prime is 22113111109. The next prime is 22113111127. The reversal of 22113111121 is 12111131122.

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 22113111121 - 2⁵ = 22113111089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22113111095 and 22113111104.

It is not an unprimeable number, because it can be changed into a prime (22113111127) 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, 139956321 + ... + 139956478.

It is an arithmetic number, because the mean of its divisors is an integer number (5598256000).

Almost surely, 2^22113111121 is an apocalyptic number.

It is an amenable number.

22113111121 is a deficient number, since it is larger than the sum of its proper divisors (279912879).

22113111121 is an equidigital number, since it uses as much as digits as its factorization.

22113111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279912878.

The product of its digits is 24, while the sum is 16.

Adding to 22113111121 its reverse (12111131122), we get a palindrome (34224242243).

The spelling of 22113111121 in words is "twenty-two billion, one hundred thirteen million, one hundred eleven thousand, one hundred twenty-one".