22220442620 has 48 divisors (see below), whose sum is σ = 52008233760. Its totient is φ = 7925059584.

The previous prime is 22220442619. The next prime is 22220442641. The reversal of 22220442620 is 2624402222.

It is a self number, because there is not a number n which added to its sum of digits gives 22220442620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1713389 + ... + 1726308.

It is an arithmetic number, because the mean of its divisors is an integer number (1083504870).

Almost surely, 2^22220442620 is an apocalyptic number.

22220442620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220442620 is an abundant number, since it is smaller than the sum of its proper divisors (29787791140).

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

22220442620 is a wasteful number, since it uses less digits than its factorization.

22220442620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439742 (or 3439740 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 22220442620 its reverse (2624402222), we get a palindrome (24844844842).

The spelling of 22220442620 in words is "twenty-two billion, two hundred twenty million, four hundred forty-two thousand, six hundred twenty".