12127361 has 4 divisors (see below), whose sum is σ = 12177924. Its totient is φ = 12076800.

The previous prime is 12127351. The next prime is 12127387. The reversal of 12127361 is 16372121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8814961 + 3312400 = 2969^2 + 1820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12127361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12127321) 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, 24920 + ... + 25401.

It is an arithmetic number, because the mean of its divisors is an integer number (3044481).

Almost surely, 2^12127361 is an apocalyptic number.

It is an amenable number.

12127361 is a deficient number, since it is larger than the sum of its proper divisors (50563).

12127361 is an equidigital number, since it uses as much as digits as its factorization.

12127361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50562.

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

The square root of 12127361 is about 3482.4360726365. The cubic root of 12127361 is about 229.7499551049.

Adding to 12127361 its reverse (16372121), we get a palindrome (28499482).

The spelling of 12127361 in words is "twelve million, one hundred twenty-seven thousand, three hundred sixty-one".