12271227 has 16 divisors (see below), whose sum is σ = 16747680. Its totient is φ = 7990272.

The previous prime is 12271219. The next prime is 12271247. The reversal of 12271227 is 72217221.

It is not a de Polignac number, because 12271227 - 2³ = 12271219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12271197 and 12271206.

It is not an unprimeable number, because it can be changed into a prime (12271247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29799 + ... + 30207.

It is an arithmetic number, because the mean of its divisors is an integer number (1046730).

Almost surely, 2^12271227 is an apocalyptic number.

12271227 is a deficient number, since it is larger than the sum of its proper divisors (4476453).

12271227 is a wasteful number, since it uses less digits than its factorization.

12271227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622.

The product of its digits is 784, while the sum is 24.

The square root of 12271227 is about 3503.0311160479. The cubic root of 12271227 is about 230.6548884230.

Adding to 12271227 its reverse (72217221), we get a palindrome (84488448).

The spelling of 12271227 in words is "twelve million, two hundred seventy-one thousand, two hundred twenty-seven".