12227715 has 24 divisors (see below), whose sum is σ = 21292128. Its totient is φ = 6491520.

The previous prime is 12227711. The next prime is 12227731. The reversal of 12227715 is 51772221.

It is not a de Polignac number, because 12227715 - 2² = 12227711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12227711) 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 23 ways as a sum of consecutive naturals, for example, 12162 + ... + 13128.

It is an arithmetic number, because the mean of its divisors is an integer number (887172).

Almost surely, 2^12227715 is an apocalyptic number.

12227715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12227715 is a deficient number, since it is larger than the sum of its proper divisors (9064413).

12227715 is a wasteful number, since it uses less digits than its factorization.

12227715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259 (or 1256 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 12227715 is about 3496.8149793777. The cubic root of 12227715 is about 230.3819425771.

Adding to 12227715 its reverse (51772221), we get a palindrome (63999936).

The spelling of 12227715 in words is "twelve million, two hundred twenty-seven thousand, seven hundred fifteen".