22044443220 has 60 divisors (see below), whose sum is σ = 69154239924. Its totient is φ = 5878517760.

The previous prime is 22044443189. The next prime is 22044443221. The reversal of 22044443220 is 2234444022.

22044443220 is a `hidden beast` number, since 2 + 204 + 4 + 4 + 432 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3413831184 + 18630612036 = 58428^2 + 136494^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22044443221) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6802221 + ... + 6805460.

Almost surely, 2^22044443220 is an apocalyptic number.

22044443220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22044443220 is an abundant number, since it is smaller than the sum of its proper divisors (47109796704).

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

22044443220 is a wasteful number, since it uses less digits than its factorization.

22044443220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13607702 (or 13607691 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 22044443220 its reverse (2234444022), we get a palindrome (24278887242).

The spelling of 22044443220 in words is "twenty-two billion, forty-four million, four hundred forty-three thousand, two hundred twenty".