12727135321 has 4 divisors (see below), whose sum is σ = 12727427200. Its totient is φ = 12726843444.

The previous prime is 12727135319. The next prime is 12727135327. The reversal of 12727135321 is 12353172721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12727135321 - 2¹ = 12727135319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12727135327) 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, 65901 + ... + 172618.

It is an arithmetic number, because the mean of its divisors is an integer number (3181856800).

Almost surely, 2^12727135321 is an apocalyptic number.

It is an amenable number.

12727135321 is a deficient number, since it is larger than the sum of its proper divisors (291879).

12727135321 is an equidigital number, since it uses as much as digits as its factorization.

12727135321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291878.

The product of its digits is 17640, while the sum is 34.

The spelling of 12727135321 in words is "twelve billion, seven hundred twenty-seven million, one hundred thirty-five thousand, three hundred twenty-one".