12251217 has 8 divisors (see below), whose sum is σ = 17820000. Its totient is φ = 7424960.

The previous prime is 12251207. The next prime is 12251269. The reversal of 12251217 is 71215221.

12251217 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 sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12251217 - 2⁴ = 12251201 is a prime.

It is a zygodrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 12251193 and 12251202.

It is not an unprimeable number, because it can be changed into a prime (12251207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185592 + ... + 185657.

It is an arithmetic number, because the mean of its divisors is an integer number (2227500).

Almost surely, 2^12251217 is an apocalyptic number.

It is an amenable number.

12251217 is a deficient number, since it is larger than the sum of its proper divisors (5568783).

12251217 is a wasteful number, since it uses less digits than its factorization.

12251217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371263.

The product of its digits is 280, while the sum is 21.

The square root of 12251217 is about 3500.1738528250. The cubic root of 12251217 is about 230.5294482290.

Adding to 12251217 its reverse (71215221), we get a palindrome (83466438).

It can be divided in two parts, 1225 and 1217, that added together give a palindrome (2442).

The spelling of 12251217 in words is "twelve million, two hundred fifty-one thousand, two hundred seventeen".