201112111111 has 8 divisors (see below), whose sum is σ = 213217724304. Its totient is φ = 189037107840.

The previous prime is 201112111097. The next prime is 201112111133. The reversal of 201112111111 is 111111211102.

201112111111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201112111111 - 2⁹ = 201112110599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201112111091 and 201112111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201112181111) 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 7 ways as a sum of consecutive naturals, for example, 7638945 + ... + 7665226.

It is an arithmetic number, because the mean of its divisors is an integer number (26652215538).

Almost surely, 2^201112111111 is an apocalyptic number.

201112111111 is a deficient number, since it is larger than the sum of its proper divisors (12105613193).

201112111111 is a wasteful number, since it uses less digits than its factorization.

201112111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15304961.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 201112111111 its reverse (111111211102), we get a palindrome (312223322213).

Subtracting from 201112111111 its reverse (111111211102), we obtain a palindrome (90000900009).

The spelling of 201112111111 in words is "two hundred one billion, one hundred twelve million, one hundred eleven thousand, one hundred eleven".