12241644021427 has 2 divisors, whose sum is σ = 12241644021428. Its totient is φ = 12241644021426.

The previous prime is 12241644021389. The next prime is 12241644021469. The reversal of 12241644021427 is 72412044614221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12241644021427 - 2³⁹ = 11691888207539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12241644021427.

It is not a weakly prime, because it can be changed into another prime (12241644024427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6120822010713 + 6120822010714.

It is an arithmetic number, because the mean of its divisors is an integer number (6120822010714).

Almost surely, 2^{12241644021427} is an apocalyptic number.

12241644021427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12241644021427 is an equidigital number, since it uses as much as digits as its factorization.

12241644021427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172032, while the sum is 40.

Adding to 12241644021427 its reverse (72412044614221), we get a palindrome (84653688635648).

The spelling of 12241644021427 in words is "twelve trillion, two hundred forty-one billion, six hundred forty-four million, twenty-one thousand, four hundred twenty-seven".