12750217 has 4 divisors (see below), whose sum is σ = 12775120. Its totient is φ = 12725316.

The previous prime is 12750209. The next prime is 12750223. The reversal of 12750217 is 71205721.

It is a happy number.

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: 71205721 = 43 ⋅1655947.

It is a cyclic number.

It is not a de Polignac number, because 12750217 - 2³ = 12750209 is a prime.

It is a super-3 number, since 3×12750217³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12750191 and 12750200.

It is not an unprimeable number, because it can be changed into a prime (12750247) 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, 11667 + ... + 12712.

It is an arithmetic number, because the mean of its divisors is an integer number (3193780).

Almost surely, 2^12750217 is an apocalyptic number.

It is an amenable number.

12750217 is a deficient number, since it is larger than the sum of its proper divisors (24903).

12750217 is an equidigital number, since it uses as much as digits as its factorization.

12750217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24902.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 12750217 is about 3570.7446002200. The cubic root of 12750217 is about 233.6177617636.

Adding to 12750217 its reverse (71205721), we get a palindrome (83955938).

The spelling of 12750217 in words is "twelve million, seven hundred fifty thousand, two hundred seventeen".