23104422431221 has 4 divisors (see below), whose sum is σ = 23104432446732. Its totient is φ = 23104412415712.

The previous prime is 23104422431159. The next prime is 23104422431249. The reversal of 23104422431221 is 12213422440132.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10055964000996 + 13048458430225 = 3171114^2 + 3612265^2 .

It is a cyclic number.

It is not a de Polignac number, because 23104422431221 - 2¹¹ = 23104422429173 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 (23104422431281) 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, 396825 + ... + 6809281.

It is an arithmetic number, because the mean of its divisors is an integer number (5776108111683).

Almost surely, 2^{23104422431221} is an apocalyptic number.

It is an amenable number.

23104422431221 is a deficient number, since it is larger than the sum of its proper divisors (10015511).

23104422431221 is an equidigital number, since it uses as much as digits as its factorization.

23104422431221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10015510.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 23104422431221 its reverse (12213422440132), we get a palindrome (35317844871353).

The spelling of 23104422431221 in words is "twenty-three trillion, one hundred four billion, four hundred twenty-two million, four hundred thirty-one thousand, two hundred twenty-one".