12213187 has 8 divisors (see below), whose sum is σ = 14048096. Its totient is φ = 10400832.

The previous prime is 12213169. The next prime is 12213193. The reversal of 12213187 is 78131221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12213187 - 2¹¹ = 12211139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12213127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4458 + ... + 6655.

It is an arithmetic number, because the mean of its divisors is an integer number (1756012).

Almost surely, 2^12213187 is an apocalyptic number.

12213187 is a deficient number, since it is larger than the sum of its proper divisors (1834909).

12213187 is a wasteful number, since it uses less digits than its factorization.

12213187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11277.

The product of its digits is 672, while the sum is 25.

The square root of 12213187 is about 3494.7370430406. The cubic root of 12213187 is about 230.2906659083.

The spelling of 12213187 in words is "twelve million, two hundred thirteen thousand, one hundred eighty-seven".