12229286 has 12 divisors (see below), whose sum is σ = 18786132. Its totient is φ = 5970636.

The previous prime is 12229267. The next prime is 12229289. The reversal of 12229286 is 68292221.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12229289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2045 + ... + 5351.

It is an arithmetic number, because the mean of its divisors is an integer number (1565511).

Almost surely, 2^12229286 is an apocalyptic number.

12229286 is a deficient number, since it is larger than the sum of its proper divisors (6556846).

12229286 is an equidigital number, since it uses as much as digits as its factorization.

12229286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395 (or 3352 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 12229286 is about 3497.0396051518. The cubic root of 12229286 is about 230.3918085396.

The spelling of 12229286 in words is "twelve million, two hundred twenty-nine thousand, two hundred eighty-six".