111111001101011 has 12 divisors (see below), whose sum is σ = 119761772172192. Its totient is φ = 103023414219024.

The previous prime is 111111001100969. The next prime is 111111001101053. The reversal of 111111001101011 is 110101100111111.

It is an interprime number because it is at equal distance from previous prime (111111001100969) and next prime (111111001101053).

It is not a de Polignac number, because 111111001101011 - 2¹⁴ = 111111001084627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111111001100983 and 111111001101001.

It is not an unprimeable number, because it can be changed into a prime (111111001191011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3274309700 + ... + 3274343633.

It is an arithmetic number, because the mean of its divisors is an integer number (9980147681016).

Almost surely, 2^{111111001101011} is an apocalyptic number.

111111001101011 is a deficient number, since it is larger than the sum of its proper divisors (8650771071181).

111111001101011 is an equidigital number, since it uses as much as digits as its factorization.

111111001101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6548653418 (or 6548653399 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 111111001101011 its reverse (110101100111111), we get a palindrome (221212101212122).

The spelling of 111111001101011 in words is "one hundred eleven trillion, one hundred eleven billion, one million, one hundred one thousand, eleven".