12103023123 has 24 divisors (see below), whose sum is σ = 18407188800. Its totient is φ = 7641966384.

The previous prime is 12103023091. The next prime is 12103023169. The reversal of 12103023123 is 32132030121.

12103023123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12103023123 - 2⁵ = 12103023091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12103023096 and 12103023105.

It is not an unprimeable number, because it can be changed into a prime (12103028123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 866368 + ... + 880226.

It is an arithmetic number, because the mean of its divisors is an integer number (766966200).

Almost surely, 2^12103023123 is an apocalyptic number.

12103023123 is a deficient number, since it is larger than the sum of its proper divisors (6304165677).

12103023123 is a wasteful number, since it uses less digits than its factorization.

12103023123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18991 (or 18988 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12103023123 its reverse (32132030121), we get a palindrome (44235053244).

The spelling of 12103023123 in words is "twelve billion, one hundred three million, twenty-three thousand, one hundred twenty-three".