12682281 has 4 divisors (see below), whose sum is σ = 16909712. Its totient is φ = 8454852.

The previous prime is 12682273. The next prime is 12682283. The reversal of 12682281 is 18228621.

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.

It is not a de Polignac number, because 12682281 - 2³ = 12682273 is a prime.

It is a super-2 number, since 2×12682281² = 321680502725922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12682283) 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, 2113711 + ... + 2113716.

It is an arithmetic number, because the mean of its divisors is an integer number (4227428).

Almost surely, 2^12682281 is an apocalyptic number.

It is an amenable number.

12682281 is a deficient number, since it is larger than the sum of its proper divisors (4227431).

12682281 is an equidigital number, since it uses as much as digits as its factorization.

12682281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4227430.

The product of its digits is 3072, while the sum is 30.

The square root of 12682281 is about 3561.2190328594. The cubic root of 12682281 is about 233.2021001275.

The spelling of 12682281 in words is "twelve million, six hundred eighty-two thousand, two hundred eighty-one".