111101111102 has 4 divisors (see below), whose sum is σ = 166651666656. Its totient is φ = 55550555550.

The previous prime is 111101111071. The next prime is 111101111123. The reversal of 111101111102 is 201111101111.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775277774 + ... + 27775277777.

It is an arithmetic number, because the mean of its divisors is an integer number (41662916664).

Almost surely, 2^111101111102 is an apocalyptic number.

111101111102 is a deficient number, since it is larger than the sum of its proper divisors (55550555554).

111101111102 is an equidigital number, since it uses as much as digits as its factorization.

111101111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55550555553.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 111101111102 its reverse (201111101111), we get a palindrome (312212212213).

Subtracting 111101111102 from its reverse (201111101111), we obtain a palindrome (90009990009).

The spelling of 111101111102 in words is "one hundred eleven billion, one hundred one million, one hundred eleven thousand, one hundred two".