22111110220 has 96 divisors (see below), whose sum is σ = 48933642240. Its totient is φ = 8381287680.

The previous prime is 22111110199. The next prime is 22111110223. The reversal of 22111110220 is 2201111122.

It is a self number, because there is not a number n which added to its sum of digits gives 22111110220.

It is not an unprimeable number, because it can be changed into a prime (22111110223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10716909 + ... + 10718971.

It is an arithmetic number, because the mean of its divisors is an integer number (509725440).

Almost surely, 2^22111110220 is an apocalyptic number.

22111110220 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 22111110220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24466821120).

22111110220 is an abundant number, since it is smaller than the sum of its proper divisors (26822532020).

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

22111110220 is a wasteful number, since it uses less digits than its factorization.

22111110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455 (or 2453 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22111110220 its reverse (2201111122), we get a palindrome (24312221342).

It can be divided in two parts, 221111102 and 20, that added together give a palindrome (221111122).

The spelling of 22111110220 in words is "twenty-two billion, one hundred eleven million, one hundred ten thousand, two hundred twenty".