12412421491 has 2 divisors, whose sum is σ = 12412421492. Its totient is φ = 12412421490.

The previous prime is 12412421447. The next prime is 12412421503. The reversal of 12412421491 is 19412421421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12412421491 - 2¹⁹ = 12411897203 is a prime.

It is not a weakly prime, because it can be changed into another prime (12412421291) 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, 6206210745 + 6206210746.

It is an arithmetic number, because the mean of its divisors is an integer number (6206210746).

Almost surely, 2^12412421491 is an apocalyptic number.

12412421491 is a deficient number, since it is larger than the sum of its proper divisors (1).

12412421491 is an equidigital number, since it uses as much as digits as its factorization.

12412421491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 31.

The spelling of 12412421491 in words is "twelve billion, four hundred twelve million, four hundred twenty-one thousand, four hundred ninety-one".