11221110211 has 4 divisors (see below), whose sum is σ = 11708984592. Its totient is φ = 10733235832.

The previous prime is 11221110209. The next prime is 11221110301. The reversal of 11221110211 is 11201112211.

It is a happy number.

11221110211 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.

It is a cyclic number.

It is not a de Polignac number, because 11221110211 - 2¹ = 11221110209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11221110191 and 11221110200.

It is not an unprimeable number, because it can be changed into a prime (11221116211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243937156 + ... + 243937201.

It is an arithmetic number, because the mean of its divisors is an integer number (2927246148).

Almost surely, 2^11221110211 is an apocalyptic number.

11221110211 is a deficient number, since it is larger than the sum of its proper divisors (487874381).

11221110211 is an equidigital number, since it uses as much as digits as its factorization.

11221110211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487874380.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11221110211 its reverse (11201112211), we get a palindrome (22422222422).

The spelling of 11221110211 in words is "eleven billion, two hundred twenty-one million, one hundred ten thousand, two hundred eleven".