22423320421 has 24 divisors (see below), whose sum is σ = 24256471680. Its totient is φ = 20719355904.

The previous prime is 22423320397. The next prime is 22423320473. The reversal of 22423320421 is 12402332422.

It is not a de Polignac number, because 22423320421 - 2⁹ = 22423319909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22423320481) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2362341 + ... + 2371813.

It is an arithmetic number, because the mean of its divisors is an integer number (1010686320).

Almost surely, 2^22423320421 is an apocalyptic number.

It is an amenable number.

22423320421 is a deficient number, since it is larger than the sum of its proper divisors (1833151259).

22423320421 is an equidigital number, since it uses as much as digits as its factorization.

22423320421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9673 (or 9654 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 22423320421 its reverse (12402332422), we get a palindrome (34825652843).

The spelling of 22423320421 in words is "twenty-two billion, four hundred twenty-three million, three hundred twenty thousand, four hundred twenty-one".