111101111101111 has 4 divisors (see below), whose sum is σ = 111101231872000. Its totient is φ = 111100990330224.

The previous prime is 111101111101087. The next prime is 111101111101153.

It is a happy number.

111101111101111 is nontrivially palindromic in base 10.

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 111101111101111 - 2¹¹ = 111101111099063 is a prime.

111101111101111 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111101111101091 and 111101111101100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111108111101111) 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, 58994871 + ... + 60848968.

It is an arithmetic number, because the mean of its divisors is an integer number (27775307968000).

Almost surely, 2^{111101111101111} is an apocalyptic number.

111101111101111 is a deficient number, since it is larger than the sum of its proper divisors (120770889).

111101111101111 is an equidigital number, since it uses as much as digits as its factorization.

111101111101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120770888.

The product of its (nonzero) digits is 1, while the sum is 13.

The spelling of 111101111101111 in words is "one hundred eleven trillion, one hundred one billion, one hundred eleven million, one hundred one thousand, one hundred eleven".