111012112111 has 4 divisors (see below), whose sum is σ = 112417328800. Its totient is φ = 109606895424.

The previous prime is 111012112103. The next prime is 111012112121. The reversal of 111012112111 is 111211210111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 111012112111 - 2³ = 111012112103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111012112091 and 111012112100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012112121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702608226 + ... + 702608383.

It is an arithmetic number, because the mean of its divisors is an integer number (28104332200).

Almost surely, 2^111012112111 is an apocalyptic number.

111012112111 is a deficient number, since it is larger than the sum of its proper divisors (1405216689).

111012112111 is an equidigital number, since it uses as much as digits as its factorization.

111012112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405216688.

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

Adding to 111012112111 its reverse (111211210111), we get a palindrome (222223322222).

It can be divided in two parts, 11101 and 2112111, that added together give a palindrome (2123212).

The spelling of 111012112111 in words is "one hundred eleven billion, twelve million, one hundred twelve thousand, one hundred eleven".