22404020321 has 8 divisors (see below), whose sum is σ = 22773597120. Its totient is φ = 22035478608.

The previous prime is 22404020203. The next prime is 22404020363. The reversal of 22404020321 is 12302040422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22404020321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22404020293 and 22404020302.

It is not an unprimeable number, because it can be changed into a prime (22404020521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215066 + ... + 301763.

It is an arithmetic number, because the mean of its divisors is an integer number (2846699640).

Almost surely, 2^22404020321 is an apocalyptic number.

It is an amenable number.

22404020321 is a deficient number, since it is larger than the sum of its proper divisors (369576799).

22404020321 is an equidigital number, since it uses as much as digits as its factorization.

22404020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517543.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22404020321 its reverse (12302040422), we get a palindrome (34706060743).

The spelling of 22404020321 in words is "twenty-two billion, four hundred four million, twenty thousand, three hundred twenty-one".