12335621 has 2 divisors, whose sum is σ = 12335622. Its totient is φ = 12335620.

The previous prime is 12335597. The next prime is 12335623. The reversal of 12335621 is 12653321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10336225 + 1999396 = 3215^2 + 1414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12335621 is a prime.

It is a Sophie Germain prime.

Together with 12335623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12335623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6167810 + 6167811.

It is an arithmetic number, because the mean of its divisors is an integer number (6167811).

Almost surely, 2^12335621 is an apocalyptic number.

It is an amenable number.

12335621 is a deficient number, since it is larger than the sum of its proper divisors (1).

12335621 is an equidigital number, since it uses as much as digits as its factorization.

12335621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 12335621 is about 3512.2102727485. The cubic root of 12335621 is about 231.0576432048.

Adding to 12335621 its reverse (12653321), we get a palindrome (24988942).

The spelling of 12335621 in words is "twelve million, three hundred thirty-five thousand, six hundred twenty-one".