12285271 has 4 divisors (see below), whose sum is σ = 13007952. Its totient is φ = 11562592.

The previous prime is 12285263. The next prime is 12285277. The reversal of 12285271 is 17258221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12285271 - 2³ = 12285263 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 (12285277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361315 + ... + 361348.

It is an arithmetic number, because the mean of its divisors is an integer number (3251988).

Almost surely, 2^12285271 is an apocalyptic number.

12285271 is a deficient number, since it is larger than the sum of its proper divisors (722681).

12285271 is an equidigital number, since it uses as much as digits as its factorization.

12285271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722680.

The product of its digits is 2240, while the sum is 28.

The square root of 12285271 is about 3505.0350925490. The cubic root of 12285271 is about 230.7428470891.

It can be divided in two parts, 1228527 and 1, that added together give a triangular number (1228528 = T₁₅₆₇).

The spelling of 12285271 in words is "twelve million, two hundred eighty-five thousand, two hundred seventy-one".