2117211 has 4 divisors (see below), whose sum is σ = 2822952. Its totient is φ = 1411472.

The previous prime is 2117179. The next prime is 2117233. The reversal of 2117211 is 1127112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2117211 - 2⁵ = 2117179 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2117411) 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, 352866 + ... + 352871.

It is an arithmetic number, because the mean of its divisors is an integer number (705738).

2^2117211 is an apocalyptic number.

2117211 is a deficient number, since it is larger than the sum of its proper divisors (705741).

2117211 is an equidigital number, since it uses as much as digits as its factorization.

2117211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705740.

The product of its digits is 28, while the sum is 15.

The square root of 2117211 is about 1455.0639161219. The cubic root of 2117211 is about 128.4068071235.

Subtracting from 2117211 its reverse (1127112), we obtain a palindrome (990099).

The spelling of 2117211 in words is "two million, one hundred seventeen thousand, two hundred eleven".