12421044247 has 2 divisors, whose sum is σ = 12421044248. Its totient is φ = 12421044246.

The previous prime is 12421044191. The next prime is 12421044277. The reversal of 12421044247 is 74244012421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12421044247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12421044277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210522123 + 6210522124.

It is an arithmetic number, because the mean of its divisors is an integer number (6210522124).

Almost surely, 2^12421044247 is an apocalyptic number.

12421044247 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421044247 is an equidigital number, since it uses as much as digits as its factorization.

12421044247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 31.

Adding to 12421044247 its reverse (74244012421), we get a palindrome (86665056668).

The spelling of 12421044247 in words is "twelve billion, four hundred twenty-one million, forty-four thousand, two hundred forty-seven".