22221320320 has 32 divisors (see below), whose sum is σ = 53122845420. Its totient is φ = 8888527872.

The previous prime is 22221320293. The next prime is 22221320351. The reversal of 22221320320 is 2302312222.

It can be written as a sum of positive squares in 2 ways, for example, as 22191465024 + 29855296 = 148968^2 + 5464^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17359767 + ... + 17361046.

Almost surely, 2^22221320320 is an apocalyptic number.

22221320320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221320320 is an abundant number, since it is smaller than the sum of its proper divisors (30901525100).

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

22221320320 is an equidigital number, since it uses as much as digits as its factorization.

22221320320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34720832 (or 34720820 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 22221320320 its reverse (2302312222), we get a palindrome (24523632542).

The spelling of 22221320320 in words is "twenty-two billion, two hundred twenty-one million, three hundred twenty thousand, three hundred twenty".