12421103313523 has 2 divisors, whose sum is σ = 12421103313524. Its totient is φ = 12421103313522.

The previous prime is 12421103313413. The next prime is 12421103313529. The reversal of 12421103313523 is 32531330112421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12421103313523 - 2⁴¹ = 10222080057971 is a prime.

It is not a weakly prime, because it can be changed into another prime (12421103313529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210551656761 + 6210551656762.

It is an arithmetic number, because the mean of its divisors is an integer number (6210551656762).

Almost surely, 2^{12421103313523} is an apocalyptic number.

12421103313523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421103313523 is an equidigital number, since it uses as much as digits as its factorization.

12421103313523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 12421103313523 its reverse (32531330112421), we get a palindrome (44952433425944).

The spelling of 12421103313523 in words is "twelve trillion, four hundred twenty-one billion, one hundred three million, three hundred thirteen thousand, five hundred twenty-three".