2217117 has 16 divisors (see below), whose sum is σ = 3428352. Its totient is φ = 1248240.

The previous prime is 2217113. The next prime is 2217143. The reversal of 2217117 is 7117122.

It is a happy number.

2217117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2217117 - 2² = 2217113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 2217093 and 2217102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217113) 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 in 15 ways as a sum of consecutive naturals, for example, 748 + ... + 2234.

It is an arithmetic number, because the mean of its divisors is an integer number (214272).

2^2217117 is an apocalyptic number.

It is an amenable number.

2217117 is a deficient number, since it is larger than the sum of its proper divisors (1211235).

2217117 is a wasteful number, since it uses less digits than its factorization.

2217117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568.

The product of its digits is 196, while the sum is 21.

The square root of 2217117 is about 1488.9986568160. The cubic root of 2217117 is about 130.3955800690.

The spelling of 2217117 in words is "two million, two hundred seventeen thousand, one hundred seventeen".