12185271323 has 2 divisors, whose sum is σ = 12185271324. Its totient is φ = 12185271322.

The previous prime is 12185271283. The next prime is 12185271379. The reversal of 12185271323 is 32317258121.

It is a weak prime.

It is an emirp because it is prime and its reverse (32317258121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12185271323 - 2²⁰ = 12184222747 is a prime.

It is not a weakly prime, because it can be changed into another prime (12185271523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6092635661 + 6092635662.

It is an arithmetic number, because the mean of its divisors is an integer number (6092635662).

Almost surely, 2^12185271323 is an apocalyptic number.

12185271323 is a deficient number, since it is larger than the sum of its proper divisors (1).

12185271323 is an equidigital number, since it uses as much as digits as its factorization.

12185271323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The spelling of 12185271323 in words is "twelve billion, one hundred eighty-five million, two hundred seventy-one thousand, three hundred twenty-three".