12321003123 has 64 divisors (see below), whose sum is σ = 21765004800. Its totient is φ = 6789847680.

The previous prime is 12321003119. The next prime is 12321003173. The reversal of 12321003123 is 32130012321.

It is not a de Polignac number, because 12321003123 - 2² = 12321003119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12321003096 and 12321003105.

It is not an unprimeable number, because it can be changed into a prime (12321003173) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 234873 + ... + 282501.

It is an arithmetic number, because the mean of its divisors is an integer number (340078200).

Almost surely, 2^12321003123 is an apocalyptic number.

12321003123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12321003123 is a deficient number, since it is larger than the sum of its proper divisors (9444001677).

12321003123 is a wasteful number, since it uses less digits than its factorization.

12321003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47729 (or 47723 counting only the distinct ones).

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

Adding to 12321003123 its reverse (32130012321), we get a palindrome (44451015444).

The spelling of 12321003123 in words is "twelve billion, three hundred twenty-one million, three thousand, one hundred twenty-three".