22636230721 has 16 divisors (see below), whose sum is σ = 25518302208. Its totient is φ = 19936123200.

The previous prime is 22636230713. The next prime is 22636230731. The reversal of 22636230721 is 12703263622.

It is a cyclic number.

It is not a de Polignac number, because 22636230721 - 2³ = 22636230713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22636230731) 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, 366946 + ... + 424171.

It is an arithmetic number, because the mean of its divisors is an integer number (1594893888).

Almost surely, 2^22636230721 is an apocalyptic number.

It is an amenable number.

22636230721 is a deficient number, since it is larger than the sum of its proper divisors (2882071487).

22636230721 is a wasteful number, since it uses less digits than its factorization.

22636230721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791232.

The product of its (nonzero) digits is 36288, while the sum is 34.

The spelling of 22636230721 in words is "twenty-two billion, six hundred thirty-six million, two hundred thirty thousand, seven hundred twenty-one".