12280571 has 4 divisors (see below), whose sum is σ = 12448872. Its totient is φ = 12112272.

The previous prime is 12280561. The next prime is 12280573. The reversal of 12280571 is 17508221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17508221 = 23 ⋅761227.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12280571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12280571.

It is not an unprimeable number, because it can be changed into a prime (12280573) 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, 84041 + ... + 84186.

It is an arithmetic number, because the mean of its divisors is an integer number (3112218).

Almost surely, 2^12280571 is an apocalyptic number.

12280571 is a deficient number, since it is larger than the sum of its proper divisors (168301).

12280571 is an equidigital number, since it uses as much as digits as its factorization.

12280571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168300.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 12280571 is about 3504.3645643683. The cubic root of 12280571 is about 230.7134180894.

Adding to 12280571 its reverse (17508221), we get a palindrome (29788792).

The spelling of 12280571 in words is "twelve million, two hundred eighty thousand, five hundred seventy-one".