12271766 has 12 divisors (see below), whose sum is σ = 19933092. Its totient is φ = 5663736.

The previous prime is 12271759. The next prime is 12271769. The reversal of 12271766 is 66717221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12271769) 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 5 ways as a sum of consecutive naturals, for example, 17816 + ... + 18491.

It is an arithmetic number, because the mean of its divisors is an integer number (1661091).

Almost surely, 2^12271766 is an apocalyptic number.

12271766 is a deficient number, since it is larger than the sum of its proper divisors (7661326).

12271766 is a wasteful number, since it uses less digits than its factorization.

12271766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36335 (or 36322 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 12271766 is about 3503.1080485763. The cubic root of 12271766 is about 230.6582654600.

Adding to 12271766 its reverse (66717221), we get a palindrome (78988987).

The spelling of 12271766 in words is "twelve million, two hundred seventy-one thousand, seven hundred sixty-six".