12165401 has 2 divisors, whose sum is σ = 12165402. Its totient is φ = 12165400.

The previous prime is 12165383. The next prime is 12165407. The reversal of 12165401 is 10456121.

12165401 is digitally balanced in base 3, 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., 10272025 + 1893376 = 3205^2 + 1376^2 .

It is a cyclic number.

It is not a de Polignac number, because 12165401 - 2⁶ = 12165337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12165407) 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, 6082700 + 6082701.

It is an arithmetic number, because the mean of its divisors is an integer number (6082701).

Almost surely, 2^12165401 is an apocalyptic number.

It is an amenable number.

12165401 is a deficient number, since it is larger than the sum of its proper divisors (1).

12165401 is an equidigital number, since it uses as much as digits as its factorization.

12165401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 12165401 is about 3487.8934903463. The cubic root of 12165401 is about 229.9899239442.

The spelling of 12165401 in words is "twelve million, one hundred sixty-five thousand, four hundred one".