111010101101011 has 16 divisors (see below), whose sum is σ = 127087257528000. Its totient is φ = 94987599003648.

The previous prime is 111010101100957. The next prime is 111010101101117. The reversal of 111010101101011 is 110101101010111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111010101101011 - 2¹³ = 111010101092819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111010101141011) 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 15 ways as a sum of consecutive naturals, for example, 116954965 + ... + 117900313.

It is an arithmetic number, because the mean of its divisors is an integer number (7942953595500).

Almost surely, 2^{111010101101011} is an apocalyptic number.

111010101101011 is a deficient number, since it is larger than the sum of its proper divisors (16077156426989).

111010101101011 is an equidigital number, since it uses as much as digits as its factorization.

111010101101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974238.

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

Adding to 111010101101011 its reverse (110101101010111), we get a palindrome (221111202111122).

The spelling of 111010101101011 in words is "one hundred eleven trillion, ten billion, one hundred one million, one hundred one thousand, eleven".