12368021 has 2 divisors, whose sum is σ = 12368022. Its totient is φ = 12368020.

The previous prime is 12368017. The next prime is 12368029. The reversal of 12368021 is 12086321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10491121 + 1876900 = 3239^2 + 1370^2 .

It is a cyclic number.

It is not a de Polignac number, because 12368021 - 2² = 12368017 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12368029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6184010 + 6184011.

It is an arithmetic number, because the mean of its divisors is an integer number (6184011).

Almost surely, 2^12368021 is an apocalyptic number.

It is an amenable number.

12368021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12368021 is an equidigital number, since it uses as much as digits as its factorization.

12368021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 12368021 is about 3516.8197281066. The cubic root of 12368021 is about 231.2597603867.

The spelling of 12368021 in words is "twelve million, three hundred sixty-eight thousand, twenty-one".