12102320123 has 16 divisors (see below), whose sum is σ = 12949171200. Its totient is φ = 11277221760.

The previous prime is 12102320119. The next prime is 12102320143. The reversal of 12102320123 is 32102320121.

It is a cyclic number.

It is not a de Polignac number, because 12102320123 - 2² = 12102320119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12102320143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 573758 + ... + 594476.

It is an arithmetic number, because the mean of its divisors is an integer number (809323200).

Almost surely, 2^12102320123 is an apocalyptic number.

12102320123 is a deficient number, since it is larger than the sum of its proper divisors (846851077).

12102320123 is a wasteful number, since it uses less digits than its factorization.

12102320123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21242.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12102320123 its reverse (32102320121), we get a palindrome (44204640244).

The spelling of 12102320123 in words is "twelve billion, one hundred two million, three hundred twenty thousand, one hundred twenty-three".