12231302123 has 4 divisors (see below), whose sum is σ = 12625860288. Its totient is φ = 11836743960.

The previous prime is 12231302119. The next prime is 12231302173. The reversal of 12231302123 is 32120313221.

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 12231302123 - 2² = 12231302119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12231302095 and 12231302104.

It is not an unprimeable number, because it can be changed into a prime (12231302113) 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, 197279036 + ... + 197279097.

It is an arithmetic number, because the mean of its divisors is an integer number (3156465072).

Almost surely, 2^12231302123 is an apocalyptic number.

12231302123 is a deficient number, since it is larger than the sum of its proper divisors (394558165).

12231302123 is an equidigital number, since it uses as much as digits as its factorization.

12231302123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394558164.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12231302123 its reverse (32120313221), we get a palindrome (44351615344).

The spelling of 12231302123 in words is "twelve billion, two hundred thirty-one million, three hundred two thousand, one hundred twenty-three".