20117211 has 8 divisors (see below), whose sum is σ = 27201024. Its totient is φ = 13222440.

The previous prime is 20117179. The next prime is 20117231. The reversal of 20117211 is 11271102.

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

It is not a de Polignac number, because 20117211 - 2⁵ = 20117179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20117231) 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, 47011 + ... + 47436.

It is an arithmetic number, because the mean of its divisors is an integer number (3400128).

Almost surely, 2^20117211 is an apocalyptic number.

20117211 is a deficient number, since it is larger than the sum of its proper divisors (7083813).

20117211 is an equidigital number, since it uses as much as digits as its factorization.

20117211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94521.

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

The square root of 20117211 is about 4485.2213992177. The cubic root of 20117211 is about 271.9709951410.

Adding to 20117211 its reverse (11271102), we get a palindrome (31388313).

The spelling of 20117211 in words is "twenty million, one hundred seventeen thousand, two hundred eleven".