22221110120 has 128 divisors (see below), whose sum is σ = 55679270400. Its totient is φ = 7913452800.

The previous prime is 22221110111. The next prime is 22221110123. The reversal of 22221110120 is 2101112222.

It is a junction number, because it is equal to n+sod(n) for n = 22221110095 and 22221110104.

It is not an unprimeable number, because it can be changed into a prime (22221110123) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 5274815 + ... + 5279025.

It is an arithmetic number, because the mean of its divisors is an integer number (434994300).

Almost surely, 2^22221110120 is an apocalyptic number.

22221110120 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 22221110120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27839635200).

22221110120 is an abundant number, since it is smaller than the sum of its proper divisors (33458160280).

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

22221110120 is a wasteful number, since it uses less digits than its factorization.

22221110120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4479 (or 4475 counting only the distinct ones).

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

Adding to 22221110120 its reverse (2101112222), we get a palindrome (24322222342).

The spelling of 22221110120 in words is "twenty-two billion, two hundred twenty-one million, one hundred ten thousand, one hundred twenty".