211113011 has 4 divisors (see below), whose sum is σ = 218392800. Its totient is φ = 203833224.

The previous prime is 211112999. The next prime is 211113013. The reversal of 211113011 is 110311112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 211113011 - 2⁶ = 211112947 is a prime.

It is a super-2 number, since 2×211113011² = 89137406826972242, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 211112983 and 211113001.

It is not an unprimeable number, because it can be changed into a prime (211113013) 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, 3639851 + ... + 3639908.

It is an arithmetic number, because the mean of its divisors is an integer number (54598200).

Almost surely, 2^211113011 is an apocalyptic number.

211113011 is a deficient number, since it is larger than the sum of its proper divisors (7279789).

211113011 is an equidigital number, since it uses as much as digits as its factorization.

211113011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7279788.

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

The square root of 211113011 is about 14529.7285246490. The cubic root of 211113011 is about 595.4404487755.

Adding to 211113011 its reverse (110311112), we get a palindrome (321424123).

The spelling of 211113011 in words is "two hundred eleven million, one hundred thirteen thousand, eleven".