100210217 has 4 divisors (see below), whose sum is σ = 100358916. Its totient is φ = 100061520.

The previous prime is 100210193. The next prime is 100210247. The reversal of 100210217 is 712012001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 712012001 = 349 ⋅2040149.

It can be written as a sum of positive squares in 2 ways, for example, as 93392896 + 6817321 = 9664^2 + 2611^2 .

It is a cyclic number.

It is not a de Polignac number, because 100210217 - 2⁸ = 100209961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100210247) 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, 73334 + ... + 74687.

It is an arithmetic number, because the mean of its divisors is an integer number (25089729).

Almost surely, 2^100210217 is an apocalyptic number.

It is an amenable number.

100210217 is a deficient number, since it is larger than the sum of its proper divisors (148699).

100210217 is an equidigital number, since it uses as much as digits as its factorization.

100210217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148698.

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

The square root of 100210217 is about 10010.5053319001. The cubic root of 100210217 is about 464.4839026789.

Adding to 100210217 its reverse (712012001), we get a palindrome (812222218).

The spelling of 100210217 in words is "one hundred million, two hundred ten thousand, two hundred seventeen".