111120101111 has 4 divisors (see below), whose sum is σ = 111284237832. Its totient is φ = 110955964392.

The previous prime is 111120101083. The next prime is 111120101153. The reversal of 111120101111 is 111101021111.

It is a happy number.

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 111120101111 - 2¹⁰ = 111120100087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111120101092 and 111120101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120101611) 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, 82067345 + ... + 82068698.

It is an arithmetic number, because the mean of its divisors is an integer number (27821059458).

Almost surely, 2^111120101111 is an apocalyptic number.

111120101111 is a deficient number, since it is larger than the sum of its proper divisors (164136721).

111120101111 is an equidigital number, since it uses as much as digits as its factorization.

111120101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164136720.

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

Adding to 111120101111 its reverse (111101021111), we get a palindrome (222221122222).

The spelling of 111120101111 in words is "one hundred eleven billion, one hundred twenty million, one hundred one thousand, one hundred eleven".