111111120111101 has 4 divisors (see below), whose sum is σ = 121212131030304. Its totient is φ = 101010109191900.

The previous prime is 111111120111091. The next prime is 111111120111107. The reversal of 111111120111101 is 101111021111111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111111120111101 - 2⁶ = 111111120111037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111120111107) 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, 5050505459585 + ... + 5050505459606.

It is an arithmetic number, because the mean of its divisors is an integer number (30303032757576).

Almost surely, 2^{111111120111101} is an apocalyptic number.

111111120111101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111111120111101 is a deficient number, since it is larger than the sum of its proper divisors (10101010919203).

111111120111101 is a wasteful number, since it uses less digits than its factorization.

111111120111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101010919202.

The product of its (nonzero) digits is 2, while the sum is 14.

Adding to 111111120111101 its reverse (101111021111111), we get a palindrome (212222141222212).

It can be divided in two parts, 1111111 and 20111101, that added together give a palindrome (21222212).

The spelling of 111111120111101 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred twenty million, one hundred eleven thousand, one hundred one".