11111220110211 has 16 divisors (see below), whose sum is σ = 15955153310880. Its totient is φ = 6837424980480.

The previous prime is 11111220110209. The next prime is 11111220110281. The reversal of 11111220110211 is 11201102211111.

It is not a de Polignac number, because 11111220110211 - 2¹ = 11111220110209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11111220110281) 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 15 ways as a sum of consecutive naturals, for example, 4098246 + ... + 6246443.

It is an arithmetic number, because the mean of its divisors is an integer number (997197081930).

Almost surely, 2^{11111220110211} is an apocalyptic number.

11111220110211 is a deficient number, since it is larger than the sum of its proper divisors (4843933200669).

11111220110211 is a wasteful number, since it uses less digits than its factorization.

11111220110211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10372246.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11111220110211 its reverse (11201102211111), we get a palindrome (22312322321322).

The spelling of 11111220110211 in words is "eleven trillion, one hundred eleven billion, two hundred twenty million, one hundred ten thousand, two hundred eleven".