11120211221 has 8 divisors (see below), whose sum is σ = 13118774784. Its totient is φ = 9224138160.

The previous prime is 11120211217. The next prime is 11120211227. The reversal of 11120211221 is 12211202111.

11120211221 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 not a de Polignac number, because 11120211221 - 2² = 11120211217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11120211196 and 11120211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120211227) 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, 25622390 + ... + 25622823.

It is an arithmetic number, because the mean of its divisors is an integer number (1639846848).

Almost surely, 2^11120211221 is an apocalyptic number.

It is an amenable number.

11120211221 is a deficient number, since it is larger than the sum of its proper divisors (1998563563).

11120211221 is an equidigital number, since it uses as much as digits as its factorization.

11120211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51245251.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11120211221 its reverse (12211202111), we get a palindrome (23331413332).

The spelling of 11120211221 in words is "eleven billion, one hundred twenty million, two hundred eleven thousand, two hundred twenty-one".