12161327 has 4 divisors (see below), whose sum is σ = 12390840. Its totient is φ = 11931816.

The previous prime is 12161321. The next prime is 12161329. The reversal of 12161327 is 72316121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72316121 = 373 ⋅193877.

It is a cyclic number.

It is not a de Polignac number, because 12161327 - 2¹⁸ = 11899183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114677 + ... + 114782.

It is an arithmetic number, because the mean of its divisors is an integer number (3097710).

Almost surely, 2^12161327 is an apocalyptic number.

12161327 is a deficient number, since it is larger than the sum of its proper divisors (229513).

12161327 is an equidigital number, since it uses as much as digits as its factorization.

12161327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229512.

The product of its digits is 504, while the sum is 23.

The square root of 12161327 is about 3487.3094213161. The cubic root of 12161327 is about 229.9642477509.

Adding to 12161327 its reverse (72316121), we get a palindrome (84477448).

The spelling of 12161327 in words is "twelve million, one hundred sixty-one thousand, three hundred twenty-seven".