22440221320 has 64 divisors (see below), whose sum is σ = 57979540800. Its totient is φ = 7730599680.

The previous prime is 22440221303. The next prime is 22440221327. The reversal of 22440221320 is 2312204422.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 22440221291 and 22440221300.

It is not an unprimeable number, because it can be changed into a prime (22440221327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1333759 + ... + 1350478.

It is an arithmetic number, because the mean of its divisors is an integer number (905930325).

Almost surely, 2^22440221320 is an apocalyptic number.

22440221320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22440221320 is an abundant number, since it is smaller than the sum of its proper divisors (35539319480).

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

22440221320 is a wasteful number, since it uses less digits than its factorization.

22440221320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684278 (or 2684274 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 22440221320 its reverse (2312204422), we get a palindrome (24752425742).

The spelling of 22440221320 in words is "twenty-two billion, four hundred forty million, two hundred twenty-one thousand, three hundred twenty".