12227205 has 16 divisors (see below), whose sum is σ = 20093184. Its totient is φ = 6344640.

The previous prime is 12227197. The next prime is 12227209. The reversal of 12227205 is 50272221.

It is a happy number.

It is not a de Polignac number, because 12227205 - 2³ = 12227197 is a prime.

It is a super-2 number, since 2×12227205² = 299009084224050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12227209) 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, 10461 + ... + 11570.

It is an arithmetic number, because the mean of its divisors is an integer number (1255824).

Almost surely, 2^12227205 is an apocalyptic number.

12227205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12227205 is a deficient number, since it is larger than the sum of its proper divisors (7865979).

12227205 is a wasteful number, since it uses less digits than its factorization.

12227205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22076.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 12227205 is about 3496.7420551136. The cubic root of 12227205 is about 230.3787395687.

Adding to 12227205 its reverse (50272221), we get a palindrome (62499426).

The spelling of 12227205 in words is "twelve million, two hundred twenty-seven thousand, two hundred five".