11122112220211 has 4 divisors (see below), whose sum is σ = 11122132399672. Its totient is φ = 11122092040752.

The previous prime is 11122112220203. The next prime is 11122112220221. The reversal of 11122112220211 is 11202221122111.

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 11122112220211 - 2³ = 11122112220203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122112220221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9239085 + ... + 10373278.

It is an arithmetic number, because the mean of its divisors is an integer number (2780533099918).

Almost surely, 2^{11122112220211} is an apocalyptic number.

11122112220211 is a deficient number, since it is larger than the sum of its proper divisors (20179461).

11122112220211 is an equidigital number, since it uses as much as digits as its factorization.

11122112220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20179460.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11122112220211 its reverse (11202221122111), we get a palindrome (22324333342322).

The spelling of 11122112220211 in words is "eleven trillion, one hundred twenty-two billion, one hundred twelve million, two hundred twenty thousand, two hundred eleven".