12165247 has 4 divisors (see below), whose sum is σ = 12177256. Its totient is φ = 12153240.

The previous prime is 12165221. The next prime is 12165277. The reversal of 12165247 is 74256121.

12165247 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74256121 = 23 ⋅3228527.

It is a cyclic number.

It is not a de Polignac number, because 12165247 - 2¹⁵ = 12132479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12165277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4329 + ... + 6562.

It is an arithmetic number, because the mean of its divisors is an integer number (3044314).

Almost surely, 2^12165247 is an apocalyptic number.

12165247 is a deficient number, since it is larger than the sum of its proper divisors (12009).

12165247 is a wasteful number, since it uses less digits than its factorization.

12165247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12008.

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

The square root of 12165247 is about 3487.8714139142. The cubic root of 12165247 is about 229.9889534707.

The spelling of 12165247 in words is "twelve million, one hundred sixty-five thousand, two hundred forty-seven".