22100022220 has 12 divisors (see below), whose sum is σ = 46410046704. Its totient is φ = 8840008880.

The previous prime is 22100022211. The next prime is 22100022223. The reversal of 22100022220 is 2222000122.

It is a self number, because there is not a number n which added to its sum of digits gives 22100022220.

It is not an unprimeable number, because it can be changed into a prime (22100022223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552500536 + ... + 552500575.

It is an arithmetic number, because the mean of its divisors is an integer number (3867503892).

Almost surely, 2^22100022220 is an apocalyptic number.

22100022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22100022220 is an abundant number, since it is smaller than the sum of its proper divisors (24310024484).

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

22100022220 is a wasteful number, since it uses less digits than its factorization.

22100022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105001120 (or 1105001118 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22100022220 its reverse (2222000122), we get a palindrome (24322022342).

The spelling of 22100022220 in words is "twenty-two billion, one hundred million, twenty-two thousand, two hundred twenty".