211001113 has 4 divisors (see below), whose sum is σ = 211248180. Its totient is φ = 210754048.

The previous prime is 211001107. The next prime is 211001143. The reversal of 211001113 is 311100112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 119836809 + 91164304 = 10947^2 + 9548^2 .

It is a cyclic number.

It is not a de Polignac number, because 211001113 - 2⁵ = 211001081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211001113.

It is not an unprimeable number, because it can be changed into a prime (211001143) 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, 122248 + ... + 123961.

It is an arithmetic number, because the mean of its divisors is an integer number (52812045).

Almost surely, 2^211001113 is an apocalyptic number.

It is an amenable number.

211001113 is a deficient number, since it is larger than the sum of its proper divisors (247067).

211001113 is an equidigital number, since it uses as much as digits as its factorization.

211001113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247066.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 211001113 is about 14525.8773573234. The cubic root of 211001113 is about 595.3352280845.

Adding to 211001113 its reverse (311100112), we get a palindrome (522101225).

The spelling of 211001113 in words is "two hundred eleven million, one thousand, one hundred thirteen".