211117 has 8 divisors (see below), whose sum is σ = 225216. Its totient is φ = 197472.

The previous prime is 211097. The next prime is 211129. The reversal of 211117 is 711112.

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

It is a cyclic number.

It is not a de Polignac number, because 211117 - 2¹⁵ = 178349 is a prime.

It is an Ulam number.

211117 is a lucky number.

It is a plaindrome in base 16.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 211097 and 211106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211177) 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, 1473 + ... + 1609.

It is an arithmetic number, because the mean of its divisors is an integer number (28152).

2²¹¹¹¹⁷ is an apocalyptic number.

It is an amenable number.

211117 is a deficient number, since it is larger than the sum of its proper divisors (14099).

211117 is a wasteful number, since it uses less digits than its factorization.

211117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227.

The product of its digits is 14, while the sum is 13.

The square root of 211117 is about 459.4747000652. The cubic root of 211117 is about 59.5444199053.

Adding to 211117 its reverse (711112), we get a palindrome (922229).

The spelling of 211117 in words is "two hundred eleven thousand, one hundred seventeen", and thus it is an iban number.