12187241 has 12 divisors (see below), whose sum is σ = 13687296. Its totient is φ = 10838520.

The previous prime is 12187237. The next prime is 12187243. The reversal of 12187241 is 14278121.

It is not a de Polignac number, because 12187241 - 2² = 12187237 is a prime.

It is a super-4 number, since 4×12187241⁴ (a number of 29 digits) contains 4444 as substring.

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 12187241.

It is not an unprimeable number, because it can be changed into a prime (12187243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4616 + ... + 6758.

It is an arithmetic number, because the mean of its divisors is an integer number (1140608).

Almost surely, 2^12187241 is an apocalyptic number.

12187241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12187241 is a deficient number, since it is larger than the sum of its proper divisors (1500055).

12187241 is a wasteful number, since it uses less digits than its factorization.

12187241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212 (or 2201 counting only the distinct ones).

The product of its digits is 896, while the sum is 26.

The square root of 12187241 is about 3491.0229159947. The cubic root of 12187241 is about 230.1274718719.

The spelling of 12187241 in words is "twelve million, one hundred eighty-seven thousand, two hundred forty-one".