11121120211 has 2 divisors, whose sum is σ = 11121120212. Its totient is φ = 11121120210.

The previous prime is 11121120191. The next prime is 11121120281. The reversal of 11121120211 is 11202112111.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (11202112111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11121120211 - 2⁹ = 11121119699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11121120191 and 11121120200.

It is not a weakly prime, because it can be changed into another prime (11121120281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560560105 + 5560560106.

It is an arithmetic number, because the mean of its divisors is an integer number (5560560106).

Almost surely, 2^11121120211 is an apocalyptic number.

11121120211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121120211 is an equidigital number, since it uses as much as digits as its factorization.

11121120211 is an odious number, because the sum of its binary digits is odd.

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

Adding to 11121120211 its reverse (11202112111), we get a palindrome (22323232322).

The spelling of 11121120211 in words is "eleven billion, one hundred twenty-one million, one hundred twenty thousand, two hundred eleven".