12171206 has 8 divisors (see below), whose sum is σ = 18306120. Its totient is φ = 6069168.

The previous prime is 12171199. The next prime is 12171227. The reversal of 12171206 is 60217121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7271 + ... + 8786.

It is an arithmetic number, because the mean of its divisors is an integer number (2288265).

Almost surely, 2^12171206 is an apocalyptic number.

12171206 is a deficient number, since it is larger than the sum of its proper divisors (6134914).

12171206 is a wasteful number, since it uses less digits than its factorization.

12171206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16438.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 12171206 is about 3488.7255552709. The cubic root of 12171206 is about 230.0264997822.

Adding to 12171206 its reverse (60217121), we get a palindrome (72388327).

The spelling of 12171206 in words is "twelve million, one hundred seventy-one thousand, two hundred six".