211113113 has 4 divisors (see below), whose sum is σ = 220291968. Its totient is φ = 201934260.

The previous prime is 211113109. The next prime is 211113139. The reversal of 211113113 is 311311112.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 211113113 - 2² = 211113109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211113103) 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, 4589393 + ... + 4589438.

It is an arithmetic number, because the mean of its divisors is an integer number (55072992).

Almost surely, 2^211113113 is an apocalyptic number.

211113113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

211113113 is a deficient number, since it is larger than the sum of its proper divisors (9178855).

211113113 is an equidigital number, since it uses as much as digits as its factorization.

211113113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9178854.

The product of its digits is 18, while the sum is 14.

The square root of 211113113 is about 14529.7320346936. The cubic root of 211113113 is about 595.4405446719.

Adding to 211113113 its reverse (311311112), we get a palindrome (522424225).

The spelling of 211113113 in words is "two hundred eleven million, one hundred thirteen thousand, one hundred thirteen".