23120310221 has 4 divisors (see below), whose sum is σ = 23121101952. Its totient is φ = 23119518492.

The previous prime is 23120310211. The next prime is 23120310223. The reversal of 23120310221 is 12201302132.

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 not a de Polignac number, because 23120310221 - 2¹⁴ = 23120293837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23120310221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23120310223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350315 + ... + 411048.

It is an arithmetic number, because the mean of its divisors is an integer number (5780275488).

Almost surely, 2^23120310221 is an apocalyptic number.

It is an amenable number.

23120310221 is a deficient number, since it is larger than the sum of its proper divisors (791731).

23120310221 is an equidigital number, since it uses as much as digits as its factorization.

23120310221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791730.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23120310221 its reverse (12201302132), we get a palindrome (35321612353).

The spelling of 23120310221 in words is "twenty-three billion, one hundred twenty million, three hundred ten thousand, two hundred twenty-one".