22112220123 has 12 divisors (see below), whose sum is σ = 36502712688. Its totient is φ = 12635554320.

The previous prime is 22112220107. The next prime is 22112220133. The reversal of 22112220123 is 32102221122.

It is not a de Polignac number, because 22112220123 - 2⁴ = 22112220107 is a prime.

It is a super-2 number, since 2×22112220123² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22112220096 and 22112220105.

It is not an unprimeable number, because it can be changed into a prime (22112220133) 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 11 ways as a sum of consecutive naturals, for example, 175493748 + ... + 175493873.

It is an arithmetic number, because the mean of its divisors is an integer number (3041892724).

Almost surely, 2^22112220123 is an apocalyptic number.

22112220123 is a deficient number, since it is larger than the sum of its proper divisors (14390492565).

22112220123 is a wasteful number, since it uses less digits than its factorization.

22112220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350987634 (or 350987631 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22112220123 its reverse (32102221122), we get a palindrome (54214441245).

Subtracting 22112220123 from its reverse (32102221122), we obtain a palindrome (9990000999).

The spelling of 22112220123 in words is "twenty-two billion, one hundred twelve million, two hundred twenty thousand, one hundred twenty-three".