12327168121 has 4 divisors (see below), whose sum is σ = 12353908644. Its totient is φ = 12300427600.

The previous prime is 12327168097. The next prime is 12327168149. The reversal of 12327168121 is 12186172321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12186172321 = 1103 ⋅11048207.

It can be written as a sum of positive squares in 2 ways, for example, as 2526168121 + 9801000000 = 50261^2 + 99000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12327168121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12327168221) 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, 13369570 + ... + 13370491.

It is an arithmetic number, because the mean of its divisors is an integer number (3088477161).

Almost surely, 2^12327168121 is an apocalyptic number.

It is an amenable number.

12327168121 is a deficient number, since it is larger than the sum of its proper divisors (26740523).

12327168121 is an equidigital number, since it uses as much as digits as its factorization.

12327168121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26740522.

The product of its digits is 8064, while the sum is 34.

The spelling of 12327168121 in words is "twelve billion, three hundred twenty-seven million, one hundred sixty-eight thousand, one hundred twenty-one".