12227766 has 16 divisors (see below), whose sum is σ = 25519104. Its totient is φ = 3898664.

The previous prime is 12227753. The next prime is 12227779. The reversal of 12227766 is 66772221.

It is an interprime number because it is at equal distance from previous prime (12227753) and next prime (12227779).

It is a super-2 number, since 2×12227766² = 299036522701512, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 44166 + ... + 44441.

It is an arithmetic number, because the mean of its divisors is an integer number (1594944).

Almost surely, 2^12227766 is an apocalyptic number.

12227766 is an abundant number, since it is smaller than the sum of its proper divisors (13291338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12227766 is a wasteful number, since it uses less digits than its factorization.

12227766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88635.

The product of its digits is 14112, while the sum is 33.

The square root of 12227766 is about 3496.8222717204. The cubic root of 12227766 is about 230.3822628731.

Adding to 12227766 its reverse (66772221), we get a palindrome (78999987).

The spelling of 12227766 in words is "twelve million, two hundred twenty-seven thousand, seven hundred sixty-six".