211011113 has 4 divisors (see below), whose sum is σ = 211053828. Its totient is φ = 210968400.

The previous prime is 211011109. The next prime is 211011127. The reversal of 211011113 is 311110112.

It is a happy number.

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 145853929 + 65157184 = 12077^2 + 8072^2 .

It is a cyclic number.

It is not a de Polignac number, because 211011113 - 2² = 211011109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211011094 and 211011103.

It is not an unprimeable number, because it can be changed into a prime (211011193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12806 + ... + 24207.

It is an arithmetic number, because the mean of its divisors is an integer number (52763457).

Almost surely, 2^211011113 is an apocalyptic number.

It is an amenable number.

211011113 is a deficient number, since it is larger than the sum of its proper divisors (42715).

211011113 is an equidigital number, since it uses as much as digits as its factorization.

211011113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42714.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 211011113 is about 14526.2215665327. The cubic root of 211011113 is about 595.3446328662.

Adding to 211011113 its reverse (311110112), we get a palindrome (522121225).

The spelling of 211011113 in words is "two hundred eleven million, eleven thousand, one hundred thirteen".