111112211011 has 4 divisors (see below), whose sum is σ = 111732949800. Its totient is φ = 110491472224.

The previous prime is 111112211009. The next prime is 111112211057. The reversal of 111112211011 is 110112211111.

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 111112211011 - 2¹ = 111112211009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111112210982 and 111112211000.

It is not an unprimeable number, because it can be changed into a prime (111112281011) 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, 310369126 + ... + 310369483.

It is an arithmetic number, because the mean of its divisors is an integer number (27933237450).

Almost surely, 2^111112211011 is an apocalyptic number.

111112211011 is a deficient number, since it is larger than the sum of its proper divisors (620738789).

111112211011 is an equidigital number, since it uses as much as digits as its factorization.

111112211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620738788.

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

Adding to 111112211011 its reverse (110112211111), we get a palindrome (221224422122).

The spelling of 111112211011 in words is "one hundred eleven billion, one hundred twelve million, two hundred eleven thousand, eleven".