22023320621 has 16 divisors (see below), whose sum is σ = 23331897600. Its totient is φ = 20752175808.

The previous prime is 22023320609. The next prime is 22023320651. The reversal of 22023320621 is 12602332022.

It is a cyclic number.

It is not a de Polignac number, because 22023320621 - 2²² = 22019126317 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 (22023320651) 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, 1648115 + ... + 1661423.

It is an arithmetic number, because the mean of its divisors is an integer number (1458243600).

Almost surely, 2^22023320621 is an apocalyptic number.

It is an amenable number.

22023320621 is a deficient number, since it is larger than the sum of its proper divisors (1308576979).

22023320621 is a wasteful number, since it uses less digits than its factorization.

22023320621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14708.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 22023320621 its reverse (12602332022), we get a palindrome (34625652643).

The spelling of 22023320621 in words is "twenty-two billion, twenty-three million, three hundred twenty thousand, six hundred twenty-one".