22103001220 has 12 divisors (see below), whose sum is σ = 46416302604. Its totient is φ = 8841200480.

The previous prime is 22103001181. The next prime is 22103001223. The reversal of 22103001220 is 2210030122.

It can be written as a sum of positive squares in 2 ways, for example, as 12525638724 + 9577362496 = 111918^2 + 97864^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22103001220.

It is not an unprimeable number, because it can be changed into a prime (22103001223) 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, 552575011 + ... + 552575050.

It is an arithmetic number, because the mean of its divisors is an integer number (3868025217).

Almost surely, 2^22103001220 is an apocalyptic number.

22103001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22103001220 is an abundant number, since it is smaller than the sum of its proper divisors (24313301384).

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

22103001220 is a wasteful number, since it uses less digits than its factorization.

22103001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105150070 (or 1105150068 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 22103001220 its reverse (2210030122), we get a palindrome (24313031342).

The spelling of 22103001220 in words is "twenty-two billion, one hundred three million, one thousand, two hundred twenty".