12131300112123 has 4 divisors (see below), whose sum is σ = 16175066816168. Its totient is φ = 8087533408080.

The previous prime is 12131300112079. The next prime is 12131300112163. The reversal of 12131300112123 is 32121100313121.

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

It is not a de Polignac number, because 12131300112123 - 2¹² = 12131300108027 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 12131300112123.

It is not an unprimeable number, because it can be changed into a prime (12131300112163) 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, 2021883352018 + ... + 2021883352023.

It is an arithmetic number, because the mean of its divisors is an integer number (4043766704042).

Almost surely, 2^{12131300112123} is an apocalyptic number.

12131300112123 is a deficient number, since it is larger than the sum of its proper divisors (4043766704045).

12131300112123 is an equidigital number, since it uses as much as digits as its factorization.

12131300112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043766704044.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 12131300112123 its reverse (32121100313121), we get a palindrome (44252400425244).

The spelling of 12131300112123 in words is "twelve trillion, one hundred thirty-one billion, three hundred million, one hundred twelve thousand, one hundred twenty-three".