22101000220 has 24 divisors (see below), whose sum is σ = 49982262624. Its totient is φ = 8160369216.

The previous prime is 22101000191. The next prime is 22101000227. The reversal of 22101000220 is 2200010122.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 22101000197 and 22101000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101000227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42501664 + ... + 42502183.

It is an arithmetic number, because the mean of its divisors is an integer number (2082594276).

Almost surely, 2^22101000220 is an apocalyptic number.

22101000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22101000220 is an abundant number, since it is smaller than the sum of its proper divisors (27881262404).

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

22101000220 is a wasteful number, since it uses less digits than its factorization.

22101000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85003869 (or 85003867 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22101000220 its reverse (2200010122), we get a palindrome (24301010342).

The spelling of 22101000220 in words is "twenty-two billion, one hundred one million, two hundred twenty", and thus it is an aban number.