12165427 has 2 divisors, whose sum is σ = 12165428. Its totient is φ = 12165426.

The previous prime is 12165407. The next prime is 12165443. The reversal of 12165427 is 72456121.

12165427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (72456121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12165427 - 2¹¹ = 12163379 is a prime.

It is a super-2 number, since 2×12165427² = 295995228184658, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12165395 and 12165404.

It is not a weakly prime, because it can be changed into another prime (12165407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6082713 + 6082714.

It is an arithmetic number, because the mean of its divisors is an integer number (6082714).

Almost surely, 2^12165427 is an apocalyptic number.

12165427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12165427 is an equidigital number, since it uses as much as digits as its factorization.

12165427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

The square root of 12165427 is about 3487.8972175223. The cubic root of 12165427 is about 229.9900877896.

The spelling of 12165427 in words is "twelve million, one hundred sixty-five thousand, four hundred twenty-seven".