22421130320 has 20 divisors (see below), whose sum is σ = 52129128180. Its totient is φ = 8968452096.

The previous prime is 22421130311. The next prime is 22421130341. The reversal of 22421130320 is 2303112422.

It can be written as a sum of positive squares in 2 ways, for example, as 3273212944 + 19147917376 = 57212^2 + 138376^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22421130292 and 22421130301.

It is a congruent number.

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, 140131985 + ... + 140132144.

It is an arithmetic number, because the mean of its divisors is an integer number (2606456409).

Almost surely, 2^22421130320 is an apocalyptic number.

22421130320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22421130320 is an abundant number, since it is smaller than the sum of its proper divisors (29707997860).

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

22421130320 is a wasteful number, since it uses less digits than its factorization.

22421130320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280264142 (or 280264136 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22421130320 its reverse (2303112422), we get a palindrome (24724242742).

The spelling of 22421130320 in words is "twenty-two billion, four hundred twenty-one million, one hundred thirty thousand, three hundred twenty".