22112101111 has 4 divisors (see below), whose sum is σ = 22112802424. Its totient is φ = 22111399800.

The previous prime is 22112101091. The next prime is 22112101129. The reversal of 22112101111 is 11110121122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11110121122 = 2 ⋅5555060561.

It is a cyclic number.

It is not a de Polignac number, because 22112101111 - 2⁹ = 22112100599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22112101091 and 22112101100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112101211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301020 + ... + 367201.

It is an arithmetic number, because the mean of its divisors is an integer number (5528200606).

Almost surely, 2^22112101111 is an apocalyptic number.

22112101111 is a deficient number, since it is larger than the sum of its proper divisors (701313).

22112101111 is an equidigital number, since it uses as much as digits as its factorization.

22112101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701312.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 22112101111 its reverse (11110121122), we get a palindrome (33222222233).

The spelling of 22112101111 in words is "twenty-two billion, one hundred twelve million, one hundred one thousand, one hundred eleven".