100007217 has 10 divisors (see below), whose sum is σ = 149393618. Its totient is φ = 66671424.

The previous prime is 100007213. The next prime is 100007221. The reversal of 100007217 is 712700001.

It is an interprime number because it is at equal distance from previous prime (100007213) and next prime (100007221).

It can be written as a sum of positive squares in only one way, i.e., 92910321 + 7096896 = 9639^2 + 2664^2 .

It is not a de Polignac number, because 100007217 - 2² = 100007213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100007217.

It is not an unprimeable number, because it can be changed into a prime (100007213) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 617248 + ... + 617409.

Almost surely, 2^100007217 is an apocalyptic number.

It is an amenable number.

100007217 is a deficient number, since it is larger than the sum of its proper divisors (49386401).

100007217 is an equidigital number, since it uses as much as digits as its factorization.

100007217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234669 (or 1234660 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 18.

The square root of 100007217 is about 10000.3608434896. The cubic root of 100007217 is about 464.1700492082.

Adding to 100007217 its reverse (712700001), we get a palindrome (812707218).

The spelling of 100007217 in words is "one hundred million, seven thousand, two hundred seventeen".