11122110211111 has 4 divisors (see below), whose sum is σ = 11122118454832. Its totient is φ = 11122101967392.

The previous prime is 11122110211081. The next prime is 11122110211151. The reversal of 11122110211111 is 11111201122111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11122110211111 - 2¹⁵ = 11122110178343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122110211151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1572546 + ... + 4971631.

It is an arithmetic number, because the mean of its divisors is an integer number (2780529613708).

Almost surely, 2^{11122110211111} is an apocalyptic number.

11122110211111 is a deficient number, since it is larger than the sum of its proper divisors (8243721).

11122110211111 is an equidigital number, since it uses as much as digits as its factorization.

11122110211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8243720.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11122110211111 its reverse (11111201122111), we get a palindrome (22233311333222).

The spelling of 11122110211111 in words is "eleven trillion, one hundred twenty-two billion, one hundred ten million, two hundred eleven thousand, one hundred eleven".