111100111210111 has 4 divisors (see below), whose sum is σ = 111100194351432. Its totient is φ = 111100028068792.

The previous prime is 111100111210103. The next prime is 111100111210117. The reversal of 111100111210111 is 111012111001111.

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 111100111210111 - 2³ = 111100111210103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111100111210091 and 111100111210100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100111210117) 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, 39532945 + ... + 42249898.

It is an arithmetic number, because the mean of its divisors is an integer number (27775048587858).

Almost surely, 2^{111100111210111} is an apocalyptic number.

111100111210111 is a deficient number, since it is larger than the sum of its proper divisors (83141321).

111100111210111 is an equidigital number, since it uses as much as digits as its factorization.

111100111210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83141320.

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 111100111210111 its reverse (111012111001111), we get a palindrome (222112222211222).

The spelling of 111100111210111 in words is "one hundred eleven trillion, one hundred billion, one hundred eleven million, two hundred ten thousand, one hundred eleven".