12188671 has 16 divisors (see below), whose sum is σ = 14486400. Its totient is φ = 10130400.

The previous prime is 12188669. The next prime is 12188681. The reversal of 12188671 is 17688121.

It is a cyclic number.

It is not a de Polignac number, because 12188671 - 2¹ = 12188669 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 (12188621) 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, 5056 + ... + 7066.

It is an arithmetic number, because the mean of its divisors is an integer number (905400).

Almost surely, 2^12188671 is an apocalyptic number.

12188671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12188671 is a deficient number, since it is larger than the sum of its proper divisors (2297729).

12188671 is a wasteful number, since it uses less digits than its factorization.

12188671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070.

The product of its digits is 5376, while the sum is 34.

The square root of 12188671 is about 3491.2277210174. The cubic root of 12188671 is about 230.1364722522.

It can be divided in two parts, 1218 and 8671, that added together give a palindrome (9889).

The spelling of 12188671 in words is "twelve million, one hundred eighty-eight thousand, six hundred seventy-one".