22204420440 has 32 divisors (see below), whose sum is σ = 66613261680. Its totient is φ = 5921178752.

The previous prime is 22204420429. The next prime is 22204420451. The reversal of 22204420440 is 4402440222.

It is an interprime number because it is at equal distance from previous prime (22204420429) and next prime (22204420451).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22204420440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92518299 + ... + 92518538.

Almost surely, 2^22204420440 is an apocalyptic number.

22204420440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22204420440 is an abundant number, since it is smaller than the sum of its proper divisors (44408841240).

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

22204420440 is a wasteful number, since it uses less digits than its factorization.

22204420440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185036851 (or 185036847 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 22204420440 its reverse (4402440222), we get a palindrome (26606860662).

The spelling of 22204420440 in words is "twenty-two billion, two hundred four million, four hundred twenty thousand, four hundred forty".