12303123012123 has 4 divisors (see below), whose sum is σ = 16404164016168. Its totient is φ = 8202082008080.

The previous prime is 12303123011969. The next prime is 12303123012139. The reversal of 12303123012123 is 32121032130321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12303123012123 - 2⁸ = 12303123011867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12303123012093 and 12303123012102.

It is not an unprimeable number, because it can be changed into a prime (12303123012143) 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, 2050520502018 + ... + 2050520502023.

It is an arithmetic number, because the mean of its divisors is an integer number (4101041004042).

Almost surely, 2^{12303123012123} is an apocalyptic number.

12303123012123 is a deficient number, since it is larger than the sum of its proper divisors (4101041004045).

12303123012123 is an equidigital number, since it uses as much as digits as its factorization.

12303123012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101041004044.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 12303123012123 its reverse (32121032130321), we get a palindrome (44424155142444).

The spelling of 12303123012123 in words is "twelve trillion, three hundred three billion, one hundred twenty-three million, twelve thousand, one hundred twenty-three".