22100111112 has 64 divisors (see below), whose sum is σ = 58632828480. Its totient is φ = 6917660672.

The previous prime is 22100111087. The next prime is 22100111119. The reversal of 22100111112 is 21111100122.

It is a super-2 number, since 2×22100111112² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (22100111119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119608 + ... + 241880.

It is an arithmetic number, because the mean of its divisors is an integer number (916137945).

Almost surely, 2^22100111112 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 22100111112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29316414240).

22100111112 is an abundant number, since it is smaller than the sum of its proper divisors (36532717368).

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

22100111112 is a wasteful number, since it uses less digits than its factorization.

22100111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122742 (or 122738 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 22100111112 its reverse (21111100122), we get a palindrome (43211211234).

The spelling of 22100111112 in words is "twenty-two billion, one hundred million, one hundred eleven thousand, one hundred twelve".