12227705 has 24 divisors (see below), whose sum is σ = 17667720. Its totient is φ = 8090880.

The previous prime is 12227681. The next prime is 12227711. The reversal of 12227705 is 50772221.

12227705 = 43² + 44² + ... + 332².

It can be written as a sum of positive squares in 4 ways, for example, as 2393209 + 9834496 = 1547^2 + 3136^2 .

It is not a de Polignac number, because 12227705 - 2¹² = 12223609 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 6245 + ... + 7965.

It is an arithmetic number, because the mean of its divisors is an integer number (736155).

Almost surely, 2^12227705 is an apocalyptic number.

It is an amenable number.

12227705 is a deficient number, since it is larger than the sum of its proper divisors (5440015).

12227705 is a wasteful number, since it uses less digits than its factorization.

12227705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769 (or 1762 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 12227705 is about 3496.8135495047. The cubic root of 12227705 is about 230.3818797739.

Adding to 12227705 its reverse (50772221), we get a palindrome (62999926).

The spelling of 12227705 in words is "twelve million, two hundred twenty-seven thousand, seven hundred five".