12280017 has 4 divisors (see below), whose sum is σ = 16373360. Its totient is φ = 8186676.

The previous prime is 12280013. The next prime is 12280031. The reversal of 12280017 is 71008221.

12280017 is digitally balanced in base 2 and base 4, because in such bases 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: 71008221 = 3 ⋅23669407.

It is not a de Polignac number, because 12280017 - 2² = 12280013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12279975 and 12280002.

It is not an unprimeable number, because it can be changed into a prime (12280013) 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, 2046667 + ... + 2046672.

It is an arithmetic number, because the mean of its divisors is an integer number (4093340).

Almost surely, 2^12280017 is an apocalyptic number.

It is an amenable number.

12280017 is a deficient number, since it is larger than the sum of its proper divisors (4093343).

12280017 is an equidigital number, since it uses as much as digits as its factorization.

12280017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093342.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 12280017 is about 3504.2855191893. The cubic root of 12280017 is about 230.7099487297.

Adding to 12280017 its reverse (71008221), we get a palindrome (83288238).

The spelling of 12280017 in words is "twelve million, two hundred eighty thousand, seventeen".