12271917 has 8 divisors (see below), whose sum is σ = 18700096. Its totient is φ = 7012512.

The previous prime is 12271879. The next prime is 12271951. The reversal of 12271917 is 71917221.

It is a happy number.

12271917 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12271917 - 2¹⁴ = 12255533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12271417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292168 + ... + 292209.

It is an arithmetic number, because the mean of its divisors is an integer number (2337512).

Almost surely, 2^12271917 is an apocalyptic number.

It is an amenable number.

12271917 is a deficient number, since it is larger than the sum of its proper divisors (6428179).

12271917 is an equidigital number, since it uses as much as digits as its factorization.

12271917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584387.

The product of its digits is 1764, while the sum is 30.

The square root of 12271917 is about 3503.1296007998. The cubic root of 12271917 is about 230.6592115139.

The spelling of 12271917 in words is "twelve million, two hundred seventy-one thousand, nine hundred seventeen".