12641217 has 16 divisors (see below), whose sum is σ = 17926272. Its totient is φ = 7896320.

The previous prime is 12641203. The next prime is 12641249. The reversal of 12641217 is 71214621.

12641217 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12641217 - 2¹⁰ = 12640193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12641257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15463 + ... + 16259.

It is an arithmetic number, because the mean of its divisors is an integer number (1120392).

Almost surely, 2^12641217 is an apocalyptic number.

12641217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12641217 is a deficient number, since it is larger than the sum of its proper divisors (5285055).

12641217 is a wasteful number, since it uses less digits than its factorization.

12641217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128.

The product of its digits is 672, while the sum is 24.

The square root of 12641217 is about 3555.4489168036. The cubic root of 12641217 is about 232.9501326965.

Adding to 12641217 its reverse (71214621), we get a palindrome (83855838).

The spelling of 12641217 in words is "twelve million, six hundred forty-one thousand, two hundred seventeen".