22120504440 has 32 divisors (see below), whose sum is σ = 66361513680. Its totient is φ = 5898801152.

The previous prime is 22120504433. The next prime is 22120504487. The reversal of 22120504440 is 4440502122.

It is a happy number.

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 22120504440.

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, 92168649 + ... + 92168888.

Almost surely, 2^22120504440 is an apocalyptic number.

22120504440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120504440 is an abundant number, since it is smaller than the sum of its proper divisors (44241009240).

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

22120504440 is a wasteful number, since it uses less digits than its factorization.

22120504440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184337551 (or 184337547 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The spelling of 22120504440 in words is "twenty-two billion, one hundred twenty million, five hundred four thousand, four hundred forty".