12166071 has 4 divisors (see below), whose sum is σ = 16221432. Its totient is φ = 8110712.

The previous prime is 12166069. The next prime is 12166073. The reversal of 12166071 is 17066121.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12166069) and next prime (12166073).

It is a cyclic number.

It is not a de Polignac number, because 12166071 - 2¹ = 12166069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12166073) 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, 2027676 + ... + 2027681.

It is an arithmetic number, because the mean of its divisors is an integer number (4055358).

Almost surely, 2^12166071 is an apocalyptic number.

12166071 is a deficient number, since it is larger than the sum of its proper divisors (4055361).

12166071 is an equidigital number, since it uses as much as digits as its factorization.

12166071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4055360.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 12166071 is about 3487.9895355348. The cubic root of 12166071 is about 229.9941460388.

The spelling of 12166071 in words is "twelve million, one hundred sixty-six thousand, seventy-one".