111001101101011 has 4 divisors (see below), whose sum is σ = 121092110292024. Its totient is φ = 100910091910000.

The previous prime is 111001101100993. The next prime is 111001101101021. The reversal of 111001101101011 is 110101101100111.

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 111001101101011 - 2⁹ = 111001101100499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111001101101021) 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, 5045504595490 + ... + 5045504595511.

It is an arithmetic number, because the mean of its divisors is an integer number (30273027573006).

Almost surely, 2^{111001101101011} is an apocalyptic number.

111001101101011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111001101101011 is a deficient number, since it is larger than the sum of its proper divisors (10091009191013).

111001101101011 is a wasteful number, since it uses less digits than its factorization.

111001101101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10091009191012.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 111001101101011 its reverse (110101101100111), we get a palindrome (221102202201122).

The spelling of 111001101101011 in words is "one hundred eleven trillion, one billion, one hundred one million, one hundred one thousand, eleven".