12866227 has 16 divisors (see below), whose sum is σ = 14813280. Its totient is φ = 11065600.

The previous prime is 12866219. The next prime is 12866261. The reversal of 12866227 is 72266821.

It is a cyclic number.

It is not a de Polignac number, because 12866227 - 2³ = 12866219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12866192 and 12866201.

It is not an unprimeable number, because it can be changed into a prime (12866627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16527 + ... + 17287.

It is an arithmetic number, because the mean of its divisors is an integer number (925830).

Almost surely, 2^12866227 is an apocalyptic number.

12866227 is a deficient number, since it is larger than the sum of its proper divisors (1947053).

12866227 is a wasteful number, since it uses less digits than its factorization.

12866227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854.

The product of its digits is 16128, while the sum is 34.

The square root of 12866227 is about 3586.9523275338. The cubic root of 12866227 is about 234.3241605166.

The spelling of 12866227 in words is "twelve million, eight hundred sixty-six thousand, two hundred twenty-seven".