2311112211111 has 24 divisors (see below), whose sum is σ = 3643549513344. Its totient is φ = 1399982937360.

The previous prime is 2311112211097. The next prime is 2311112211173. The reversal of 2311112211111 is 1111122111132.

2311112211111 is a `hidden beast` number, since 231 + 1 + 112 + 211 + 111 = 666.

It is not a de Polignac number, because 2311112211111 - 2⁷ = 2311112210983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311112211011) 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 23 ways as a sum of consecutive naturals, for example, 5557731 + ... + 5959076.

It is an arithmetic number, because the mean of its divisors is an integer number (151814563056).

Almost surely, 2^{2311112211111} is an apocalyptic number.

2311112211111 is a deficient number, since it is larger than the sum of its proper divisors (1332437302233).

2311112211111 is a wasteful number, since it uses less digits than its factorization.

2311112211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11518851 (or 11518848 counting only the distinct ones).

The product of its digits is 24, while the sum is 18.

Adding to 2311112211111 its reverse (1111122111132), we get a palindrome (3422234322243).

It can be divided in two parts, 2 and 311112211111, that added together give a palindrome (311112211113).

The spelling of 2311112211111 in words is "two trillion, three hundred eleven billion, one hundred twelve million, two hundred eleven thousand, one hundred eleven".