22112011123 has 4 divisors (see below), whose sum is σ = 22112378080. Its totient is φ = 22111644168.

The previous prime is 22112011099. The next prime is 22112011169. The reversal of 22112011123 is 32111021122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22112011123 - 2²¹ = 22109913971 is a prime.

It is a super-2 number, since 2×22112011123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22112011097 and 22112011106.

It is not an unprimeable number, because it can be changed into a prime (22112011183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69483 + ... + 221476.

It is an arithmetic number, because the mean of its divisors is an integer number (5528094520).

Almost surely, 2^22112011123 is an apocalyptic number.

22112011123 is a deficient number, since it is larger than the sum of its proper divisors (366957).

22112011123 is an equidigital number, since it uses as much as digits as its factorization.

22112011123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366956.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 22112011123 its reverse (32111021122), we get a palindrome (54223032245).

Subtracting 22112011123 from its reverse (32111021122), we obtain a palindrome (9999009999).

The spelling of 22112011123 in words is "twenty-two billion, one hundred twelve million, eleven thousand, one hundred twenty-three".