22111111115 has 12 divisors (see below), whose sum is σ = 28185930336. Its totient is φ = 16648364928.

The previous prime is 22111111097. The next prime is 22111111123. The reversal of 22111111115 is 51111111122.

It is not a de Polignac number, because 22111111115 - 2²⁰ = 22110062539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22111111093 and 22111111102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7649459 + ... + 7652348.

It is an arithmetic number, because the mean of its divisors is an integer number (2348827528).

Almost surely, 2^22111111115 is an apocalyptic number.

22111111115 is a deficient number, since it is larger than the sum of its proper divisors (6074819221).

22111111115 is a wasteful number, since it uses less digits than its factorization.

22111111115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15301846 (or 15301829 counting only the distinct ones).

The product of its digits is 20, while the sum is 17.

Adding to 22111111115 its reverse (51111111122), we get a palindrome (73222222237).

The spelling of 22111111115 in words is "twenty-two billion, one hundred eleven million, one hundred eleven thousand, one hundred fifteen".