12159271 has 4 divisors (see below), whose sum is σ = 12166600. Its totient is φ = 12151944.

The previous prime is 12159187. The next prime is 12159281. The reversal of 12159271 is 17295121.

12159271 is digitally balanced in base 2, 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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12159271 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 (12159281) 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, 145 + ... + 4933.

It is an arithmetic number, because the mean of its divisors is an integer number (3041650).

Almost surely, 2^12159271 is an apocalyptic number.

12159271 is a deficient number, since it is larger than the sum of its proper divisors (7329).

12159271 is an equidigital number, since it uses as much as digits as its factorization.

12159271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7328.

The product of its digits is 1260, while the sum is 28.

The square root of 12159271 is about 3487.0146257221. The cubic root of 12159271 is about 229.9512877305.

The spelling of 12159271 in words is "twelve million, one hundred fifty-nine thousand, two hundred seventy-one".