12127799 has 2 divisors, whose sum is σ = 12127800. Its totient is φ = 12127798.

The previous prime is 12127793. The next prime is 12127807. The reversal of 12127799 is 99772121.

It is a weak prime.

It is an emirp because it is prime and its reverse (99772121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12127799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12127793) 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 as a sum of consecutive naturals, namely, 6063899 + 6063900.

It is an arithmetic number, because the mean of its divisors is an integer number (6063900).

Almost surely, 2^12127799 is an apocalyptic number.

12127799 is a deficient number, since it is larger than the sum of its proper divisors (1).

12127799 is an equidigital number, since it uses as much as digits as its factorization.

12127799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 38.

The square root of 12127799 is about 3482.4989590810. The cubic root of 12127799 is about 229.7527210067.

The spelling of 12127799 in words is "twelve million, one hundred twenty-seven thousand, seven hundred ninety-nine".