22111223121 has 24 divisors (see below), whose sum is σ = 35890685376. Its totient is φ = 13015300320.

The previous prime is 22111223119. The next prime is 22111223129. The reversal of 22111223121 is 12132211122.

It is not a de Polignac number, because 22111223121 - 2¹ = 22111223119 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22111223094 and 22111223103.

It is not an unprimeable number, because it can be changed into a prime (22111223129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4105675 + ... + 4111056.

It is an arithmetic number, because the mean of its divisors is an integer number (1495445224).

Almost surely, 2^22111223121 is an apocalyptic number.

It is an amenable number.

22111223121 is a deficient number, since it is larger than the sum of its proper divisors (13779462255).

22111223121 is a wasteful number, since it uses less digits than its factorization.

22111223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8216773 (or 8216770 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 22111223121 its reverse (12132211122), we get a palindrome (34243434243).

The spelling of 22111223121 in words is "twenty-two billion, one hundred eleven million, two hundred twenty-three thousand, one hundred twenty-one".