12245281 has 4 divisors (see below), whose sum is σ = 12258864. Its totient is φ = 12231700.

The previous prime is 12245263. The next prime is 12245293. The reversal of 12245281 is 18254221.

12245281 is digitally balanced in base 2, 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: 18254221 = 487 ⋅37483.

It is a cyclic number.

It is not a de Polignac number, because 12245281 - 2⁵ = 12245249 is a prime.

It is a super-2 number, since 2×12245281² = 299893813537922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (12245081) 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, 5335 + ... + 7276.

It is an arithmetic number, because the mean of its divisors is an integer number (3064716).

Almost surely, 2^12245281 is an apocalyptic number.

It is an amenable number.

12245281 is a deficient number, since it is larger than the sum of its proper divisors (13583).

12245281 is an equidigital number, since it uses as much as digits as its factorization.

12245281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13582.

The product of its digits is 1280, while the sum is 25.

The square root of 12245281 is about 3499.3257922063. The cubic root of 12245281 is about 230.4922099183.

The spelling of 12245281 in words is "twelve million, two hundred forty-five thousand, two hundred eighty-one".