23221032303221 has 4 divisors (see below), whose sum is σ = 23221697335200. Its totient is φ = 23220367271244.

The previous prime is 23221032303191. The next prime is 23221032303253. The reversal of 23221032303221 is 12230323012232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23221032303221 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 (23221032303121) 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 3 ways as a sum of consecutive naturals, for example, 332463611 + ... + 332533448.

It is an arithmetic number, because the mean of its divisors is an integer number (5805424333800).

Almost surely, 2^{23221032303221} is an apocalyptic number.

It is an amenable number.

23221032303221 is a deficient number, since it is larger than the sum of its proper divisors (665031979).

23221032303221 is an equidigital number, since it uses as much as digits as its factorization.

23221032303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665031978.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 23221032303221 its reverse (12230323012232), we get a palindrome (35451355315453).

The spelling of 23221032303221 in words is "twenty-three trillion, two hundred twenty-one billion, thirty-two million, three hundred three thousand, two hundred twenty-one".