12012247427 has 2 divisors, whose sum is σ = 12012247428. Its totient is φ = 12012247426.

The previous prime is 12012247417. The next prime is 12012247453. The reversal of 12012247427 is 72474221021.

It is a weak prime.

It is an emirp because it is prime and its reverse (72474221021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12012247427 - 2⁴ = 12012247411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12012247393 and 12012247402.

It is not a weakly prime, because it can be changed into another prime (12012247417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006123713 + 6006123714.

It is an arithmetic number, because the mean of its divisors is an integer number (6006123714).

Almost surely, 2^12012247427 is an apocalyptic number.

12012247427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012247427 is an equidigital number, since it uses as much as digits as its factorization.

12012247427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 32.

Adding to 12012247427 its reverse (72474221021), we get a palindrome (84486468448).

The spelling of 12012247427 in words is "twelve billion, twelve million, two hundred forty-seven thousand, four hundred twenty-seven".