12363821 has 2 divisors, whose sum is σ = 12363822. Its totient is φ = 12363820.

The previous prime is 12363817. The next prime is 12363829. The reversal of 12363821 is 12836321.

12363821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12348196 + 15625 = 3514^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 12363821 - 2² = 12363817 is a prime.

It is a Sophie Germain prime.

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 (12363829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6181910 + 6181911.

It is an arithmetic number, because the mean of its divisors is an integer number (6181911).

Almost surely, 2^12363821 is an apocalyptic number.

12363821 is the 1880-th centered heptagonal number.

It is an amenable number.

12363821 is a deficient number, since it is larger than the sum of its proper divisors (1).

12363821 is an equidigital number, since it uses as much as digits as its factorization.

12363821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 12363821 is about 3516.2225469956. Note that the first 3 decimals coincide. The cubic root of 12363821 is about 231.2335799395.

The spelling of 12363821 in words is "twelve million, three hundred sixty-three thousand, eight hundred twenty-one".