22111103124 has 72 divisors (see below), whose sum is σ = 61085108448. Its totient is φ = 6688019520.

The previous prime is 22111103123. The next prime is 22111103191. The reversal of 22111103124 is 42130111122.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22111103097 and 22111103106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111103123) 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, 165574 + ... + 267650.

It is an arithmetic number, because the mean of its divisors is an integer number (848404284).

Almost surely, 2^22111103124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22111103124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30542554224).

22111103124 is an abundant number, since it is smaller than the sum of its proper divisors (38974005324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22111103124 is a wasteful number, since it uses less digits than its factorization.

22111103124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102645 (or 102640 counting only the distinct ones).

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

Adding to 22111103124 its reverse (42130111122), we get a palindrome (64241214246).

The spelling of 22111103124 in words is "twenty-two billion, one hundred eleven million, one hundred three thousand, one hundred twenty-four".