12104443123 has 4 divisors (see below), whose sum is σ = 12152668248. Its totient is φ = 12056218000.

The previous prime is 12104443103. The next prime is 12104443163. The reversal of 12104443123 is 32134440121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32134440121 = 7 ⋅4590634303.

It is a cyclic number.

It is not a de Polignac number, because 12104443123 - 2⁹ = 12104442611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12104443103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24112186 + ... + 24112687.

It is an arithmetic number, because the mean of its divisors is an integer number (3038167062).

Almost surely, 2^12104443123 is an apocalyptic number.

12104443123 is a deficient number, since it is larger than the sum of its proper divisors (48225125).

12104443123 is an equidigital number, since it uses as much as digits as its factorization.

12104443123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48225124.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 12104443123 its reverse (32134440121), we get a palindrome (44238883244).

The spelling of 12104443123 in words is "twelve billion, one hundred four million, four hundred forty-three thousand, one hundred twenty-three".