12421404241 has 2 divisors, whose sum is σ = 12421404242. Its totient is φ = 12421404240.

The previous prime is 12421404227. The next prime is 12421404271. The reversal of 12421404241 is 14240412421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11643273216 + 778131025 = 107904^2 + 27895^2 .

It is an emirp because it is prime and its reverse (14240412421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12421404241 - 2⁷ = 12421404113 is a prime.

It is not a weakly prime, because it can be changed into another prime (12421404211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210702120 + 6210702121.

It is an arithmetic number, because the mean of its divisors is an integer number (6210702121).

Almost surely, 2^12421404241 is an apocalyptic number.

It is an amenable number.

12421404241 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421404241 is an equidigital number, since it uses as much as digits as its factorization.

12421404241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 12421404241 its reverse (14240412421), we get a palindrome (26661816662).

The spelling of 12421404241 in words is "twelve billion, four hundred twenty-one million, four hundred four thousand, two hundred forty-one".