11221320211 has 8 divisors (see below), whose sum is σ = 11247299280. Its totient is φ = 11195363712.

The previous prime is 11221320193. The next prime is 11221320221. The reversal of 11221320211 is 11202312211.

11221320211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11221320211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221320221) 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 7 ways as a sum of consecutive naturals, for example, 1343095 + ... + 1351423.

It is an arithmetic number, because the mean of its divisors is an integer number (1405912410).

Almost surely, 2^11221320211 is an apocalyptic number.

11221320211 is a deficient number, since it is larger than the sum of its proper divisors (25979069).

11221320211 is an equidigital number, since it uses as much as digits as its factorization.

11221320211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11285.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11221320211 its reverse (11202312211), we get a palindrome (22423632422).

The spelling of 11221320211 in words is "eleven billion, two hundred twenty-one million, three hundred twenty thousand, two hundred eleven".