12127 has 4 divisors (see below), whose sum is σ = 12376. Its totient is φ = 11880.

The previous prime is 12119. The next prime is 12143. The reversal of 12127 is 72121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72121 = 7 ⋅10303.

It is a cyclic number.

It is not a de Polignac number, because 12127 - 2³ = 12119 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24 + ... + 157.

It is an arithmetic number, because the mean of its divisors is an integer number (3094).

2¹²¹²⁷ is an apocalyptic number.

12127 is a deficient number, since it is larger than the sum of its proper divisors (249).

12127 is an equidigital number, since it uses as much as digits as its factorization.

12127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248.

The product of its digits is 28, while the sum is 13.

The square root of 12127 is about 110.1226588854. The cubic root of 12127 is about 22.9747675396.

Adding to 12127 its reverse (72121), we get a palindrome (84248).

The spelling of 12127 in words is "twelve thousand, one hundred twenty-seven", and thus it is an iban number.