12085771 has 4 divisors (see below), whose sum is σ = 12124944. Its totient is φ = 12046600.

The previous prime is 12085763. The next prime is 12085781. The reversal of 12085771 is 17758021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17758021 = 53 ⋅335057.

It is a cyclic number.

It is not a de Polignac number, because 12085771 - 2³ = 12085763 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12085781) 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 in 3 ways as a sum of consecutive naturals, for example, 19120 + ... + 19741.

It is an arithmetic number, because the mean of its divisors is an integer number (3031236).

Almost surely, 2^12085771 is an apocalyptic number.

12085771 is a deficient number, since it is larger than the sum of its proper divisors (39173).

12085771 is an equidigital number, since it uses as much as digits as its factorization.

12085771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39172.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 12085771 is about 3476.4595495993. The cubic root of 12085771 is about 229.4870167628.

The spelling of 12085771 in words is "twelve million, eighty-five thousand, seven hundred seventy-one".