12179971 has 4 divisors (see below), whose sum is σ = 12600000. Its totient is φ = 11759944.

The previous prime is 12179957. The next prime is 12179989. The reversal of 12179971 is 17997121.

12179971 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12179971 - 2¹⁵ = 12147203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12179971.

It is not an unprimeable number, because it can be changed into a prime (12179941) 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, 209971 + ... + 210028.

It is an arithmetic number, because the mean of its divisors is an integer number (3150000).

Almost surely, 2^12179971 is an apocalyptic number.

12179971 is a deficient number, since it is larger than the sum of its proper divisors (420029).

12179971 is an equidigital number, since it uses as much as digits as its factorization.

12179971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420028.

The product of its digits is 7938, while the sum is 37.

The square root of 12179971 is about 3489.9815185757. The cubic root of 12179971 is about 230.0817038018.

The spelling of 12179971 in words is "twelve million, one hundred seventy-nine thousand, nine hundred seventy-one".