211404117 has 4 divisors (see below), whose sum is σ = 281872160. Its totient is φ = 140936076.

The previous prime is 211404107. The next prime is 211404173. The reversal of 211404117 is 711404112.

211404117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 211404117 - 2⁷ = 211403989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211404093 and 211404102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211404107) 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, 35234017 + ... + 35234022.

It is an arithmetic number, because the mean of its divisors is an integer number (70468040).

Almost surely, 2^211404117 is an apocalyptic number.

It is an amenable number.

211404117 is a deficient number, since it is larger than the sum of its proper divisors (70468043).

211404117 is an equidigital number, since it uses as much as digits as its factorization.

211404117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70468042.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 211404117 is about 14539.7426731012. The cubic root of 211404117 is about 595.7140094870.

Adding to 211404117 its reverse (711404112), we get a palindrome (922808229).

The spelling of 211404117 in words is "two hundred eleven million, four hundred four thousand, one hundred seventeen".