12421303357 has 2 divisors, whose sum is σ = 12421303358. Its totient is φ = 12421303356.

The previous prime is 12421303291. The next prime is 12421303361. The reversal of 12421303357 is 75330312421.

12421303357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6906607236 + 5514696121 = 83106^2 + 74261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12421303357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12421303057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210651678 + 6210651679.

It is an arithmetic number, because the mean of its divisors is an integer number (6210651679).

Almost surely, 2^12421303357 is an apocalyptic number.

It is an amenable number.

12421303357 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421303357 is an equidigital number, since it uses as much as digits as its factorization.

12421303357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

Adding to 12421303357 its reverse (75330312421), we get a palindrome (87751615778).

The spelling of 12421303357 in words is "twelve billion, four hundred twenty-one million, three hundred three thousand, three hundred fifty-seven".