23221000321 has 16 divisors (see below), whose sum is σ = 24104583360. Its totient is φ = 22343106240.

The previous prime is 23221000291. The next prime is 23221000367. The reversal of 23221000321 is 12300012232.

It is a cyclic number.

It is not a de Polignac number, because 23221000321 - 2⁵ = 23221000289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23221000295 and 23221000304.

It is not an unprimeable number, because it can be changed into a prime (23221000391) 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, 18098346 + ... + 18099628.

It is an arithmetic number, because the mean of its divisors is an integer number (1506536460).

Almost surely, 2^23221000321 is an apocalyptic number.

It is an amenable number.

23221000321 is a deficient number, since it is larger than the sum of its proper divisors (883583039).

23221000321 is a wasteful number, since it uses less digits than its factorization.

23221000321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 23221000321 its reverse (12300012232), we get a palindrome (35521012553).

The spelling of 23221000321 in words is "twenty-three billion, two hundred twenty-one million, three hundred twenty-one", and thus it is an aban number.