23320001221 has 8 divisors (see below), whose sum is σ = 25441473600. Its totient is φ = 21198774240.

The previous prime is 23320001207. The next prime is 23320001249. The reversal of 23320001221 is 12210002332.

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

It is a cyclic number.

It is not a de Polignac number, because 23320001221 - 2¹³ = 23319993029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23320001195 and 23320001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23320001251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177960 + ... + 279838.

It is an arithmetic number, because the mean of its divisors is an integer number (3180184200).

Almost surely, 2^23320001221 is an apocalyptic number.

It is an amenable number.

23320001221 is a deficient number, since it is larger than the sum of its proper divisors (2121472379).

23320001221 is a wasteful number, since it uses less digits than its factorization.

23320001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122699.

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

Adding to 23320001221 its reverse (12210002332), we get a palindrome (35530003553).

The spelling of 23320001221 in words is "twenty-three billion, three hundred twenty million, one thousand, two hundred twenty-one".