12275281 has 4 divisors (see below), whose sum is σ = 12299364. Its totient is φ = 12251200.

The previous prime is 12275269. The next prime is 12275293. The reversal of 12275281 is 18257221.

12275281 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18257221 = 193 ⋅94597.

It is an interprime number because it is at equal distance from previous prime (12275269) and next prime (12275293).

It can be written as a sum of positive squares in 2 ways, for example, as 3027600 + 9247681 = 1740^2 + 3041^2 .

It is a cyclic number.

It is not a de Polignac number, because 12275281 - 2¹⁹ = 11750993 is a prime.

It is a super-2 number, since 2×12275281² = 301365047257922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12275201) 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, 11260 + ... + 12301.

It is an arithmetic number, because the mean of its divisors is an integer number (3074841).

Almost surely, 2^12275281 is an apocalyptic number.

It is an amenable number.

12275281 is a deficient number, since it is larger than the sum of its proper divisors (24083).

12275281 is an equidigital number, since it uses as much as digits as its factorization.

12275281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24082.

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

The square root of 12275281 is about 3503.6097099991. The cubic root of 12275281 is about 230.6802858279.

The spelling of 12275281 in words is "twelve million, two hundred seventy-five thousand, two hundred eighty-one".