12421351 has 2 divisors, whose sum is σ = 12421352. Its totient is φ = 12421350.

The previous prime is 12421349. The next prime is 12421361. The reversal of 12421351 is 15312421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12421351 - 2¹ = 12421349 is a prime.

Together with 12421349, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12421361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210675 + 6210676.

It is an arithmetic number, because the mean of its divisors is an integer number (6210676).

Almost surely, 2^12421351 is an apocalyptic number.

12421351 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421351 is an equidigital number, since it uses as much as digits as its factorization.

12421351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 19.

The square root of 12421351 is about 3524.3937067246. The cubic root of 12421351 is about 231.5916754902.

Adding to 12421351 its reverse (15312421), we get a palindrome (27733772).

The spelling of 12421351 in words is "twelve million, four hundred twenty-one thousand, three hundred fifty-one".