12231130123 has 4 divisors (see below), whose sum is σ = 12231414720. Its totient is φ = 12230845528.

The previous prime is 12231130111. The next prime is 12231130139. The reversal of 12231130123 is 32103113221.

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 12231130123 - 2³³ = 3641195531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12231130123.

It is not an unprimeable number, because it can be changed into a prime (12231130823) 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, 63163 + ... + 168676.

It is an arithmetic number, because the mean of its divisors is an integer number (3057853680).

Almost surely, 2^12231130123 is an apocalyptic number.

12231130123 is a deficient number, since it is larger than the sum of its proper divisors (284597).

12231130123 is an equidigital number, since it uses as much as digits as its factorization.

12231130123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284596.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12231130123 its reverse (32103113221), we get a palindrome (44334243344).

The spelling of 12231130123 in words is "twelve billion, two hundred thirty-one million, one hundred thirty thousand, one hundred twenty-three".