12127171 has 16 divisors (see below), whose sum is σ = 14834880. Its totient is φ = 9676800.

The previous prime is 12127139. The next prime is 12127177. The reversal of 12127171 is 17172121.

12127171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12127171 - 2⁵ = 12127139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12127177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11515 + ... + 12523.

It is an arithmetic number, because the mean of its divisors is an integer number (927180).

Almost surely, 2^12127171 is an apocalyptic number.

12127171 is a deficient number, since it is larger than the sum of its proper divisors (2707709).

12127171 is a wasteful number, since it uses less digits than its factorization.

12127171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134.

The product of its digits is 196, while the sum is 22.

The square root of 12127171 is about 3482.4087927755. The cubic root of 12127171 is about 229.7487552637.

Adding to 12127171 its reverse (17172121), we get a palindrome (29299292).

The spelling of 12127171 in words is "twelve million, one hundred twenty-seven thousand, one hundred seventy-one".