2100217 has 8 divisors (see below), whose sum is σ = 2414016. Its totient is φ = 1789872.

The previous prime is 2100193. The next prime is 2100221. The reversal of 2100217 is 7120012.

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

It is not a de Polignac number, because 2100217 - 2¹¹ = 2098169 is a prime.

It is a super-2 number, since 2×2100217² = 8821822894178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100197 and 2100206.

It is not an unprimeable number, because it can be changed into a prime (2100227) 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, 618 + ... + 2140.

It is an arithmetic number, because the mean of its divisors is an integer number (301752).

2^2100217 is an apocalyptic number.

It is an amenable number.

2100217 is a deficient number, since it is larger than the sum of its proper divisors (313799).

2100217 is a wasteful number, since it uses less digits than its factorization.

2100217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727.

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 2100217 is about 1449.2125447980. The cubic root of 2100217 is about 128.0623272306.

Adding to 2100217 its reverse (7120012), we get a palindrome (9220229).

The spelling of 2100217 in words is "two million, one hundred thousand, two hundred seventeen".