12182187 has 4 divisors (see below), whose sum is σ = 16242920. Its totient is φ = 8121456.

The previous prime is 12182179. The next prime is 12182189. The reversal of 12182187 is 78128121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78128121 = 3 ⋅26042707.

It is not a de Polignac number, because 12182187 - 2³ = 12182179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12182189) 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, 2030362 + ... + 2030367.

It is an arithmetic number, because the mean of its divisors is an integer number (4060730).

Almost surely, 2^12182187 is an apocalyptic number.

12182187 is a deficient number, since it is larger than the sum of its proper divisors (4060733).

12182187 is an equidigital number, since it uses as much as digits as its factorization.

12182187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060732.

The product of its digits is 1792, while the sum is 30.

The square root of 12182187 is about 3490.2989843278. The cubic root of 12182187 is about 230.0956564935.

The spelling of 12182187 in words is "twelve million, one hundred eighty-two thousand, one hundred eighty-seven".