22211022120 has 128 divisors (see below), whose sum is σ = 76354099200. Its totient is φ = 5063337216.

The previous prime is 22211022083. The next prime is 22211022139. The reversal of 22211022120 is 2122011222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22211022120.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283477 + ... + 353243.

It is an arithmetic number, because the mean of its divisors is an integer number (596516400).

Almost surely, 2^22211022120 is an apocalyptic number.

22211022120 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 22211022120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38177049600).

22211022120 is an abundant number, since it is smaller than the sum of its proper divisors (54143077080).

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

22211022120 is a wasteful number, since it uses less digits than its factorization.

22211022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70167 (or 70163 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22211022120 its reverse (2122011222), we get a palindrome (24333033342).

It can be divided in two parts, 2221102 and 2120, that added together give a palindrome (2223222).

The spelling of 22211022120 in words is "twenty-two billion, two hundred eleven million, twenty-two thousand, one hundred twenty".