12271361 has 4 divisors (see below), whose sum is σ = 12293424. Its totient is φ = 12249300.

The previous prime is 12271349. The next prime is 12271403. The reversal of 12271361 is 16317221.

12271361 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16317221 = 41 ⋅397981.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12271361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12271261) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10175 + ... + 11316.

It is an arithmetic number, because the mean of its divisors is an integer number (3073356).

Almost surely, 2^12271361 is an apocalyptic number.

It is an amenable number.

12271361 is a deficient number, since it is larger than the sum of its proper divisors (22063).

12271361 is an equidigital number, since it uses as much as digits as its factorization.

12271361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22062.

The product of its digits is 504, while the sum is 23.

The square root of 12271361 is about 3503.0502422889. The cubic root of 12271361 is about 230.6557279925.

Adding to 12271361 its reverse (16317221), we get a palindrome (28588582).

The spelling of 12271361 in words is "twelve million, two hundred seventy-one thousand, three hundred sixty-one".