10021217 has 2 divisors, whose sum is σ = 10021218. Its totient is φ = 10021216.

The previous prime is 10021213. The next prime is 10021237. The reversal of 10021217 is 71212001.

10021217 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9928801 + 92416 = 3151^2 + 304^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021217 - 2² = 10021213 is a prime.

It is a super-2 number, since 2×10021217² = 200849580322178, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10021213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010608 + 5010609.

It is an arithmetic number, because the mean of its divisors is an integer number (5010609).

Almost surely, 2^10021217 is an apocalyptic number.

It is an amenable number.

10021217 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021217 is an equidigital number, since it uses as much as digits as its factorization.

10021217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 10021217 is about 3165.6305848914. The cubic root of 10021217 is about 215.5957301725.

Adding to 10021217 its reverse (71212001), we get a palindrome (81233218).

The spelling of 10021217 in words is "ten million, twenty-one thousand, two hundred seventeen".