22110112220 has 72 divisors (see below), whose sum is σ = 54314018640. Its totient is φ = 7538200320.

The previous prime is 22110112159. The next prime is 22110112247. The reversal of 22110112220 is 2221101122.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 22110112195 and 22110112204.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 112400 + ... + 238440.

It is an arithmetic number, because the mean of its divisors is an integer number (754361370).

Almost surely, 2^22110112220 is an apocalyptic number.

22110112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22110112220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27157009320).

22110112220 is an abundant number, since it is smaller than the sum of its proper divisors (32203906420).

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

22110112220 is a wasteful number, since it uses less digits than its factorization.

22110112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126243 (or 126234 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22110112220 its reverse (2221101122), we get a palindrome (24331213342).

The spelling of 22110112220 in words is "twenty-two billion, one hundred ten million, one hundred twelve thousand, two hundred twenty".