111111001011011 has 4 divisors (see below), whose sum is σ = 111572042509224. Its totient is φ = 110649959512800.

The previous prime is 111111001010923. The next prime is 111111001011013. The reversal of 111111001011011 is 110110100111111.

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 111111001011011 - 2¹⁴ = 111111000994627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111111001010983 and 111111001011001.

It is not an unprimeable number, because it can be changed into a prime (111111001011013) 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, 230520748745 + ... + 230520749226.

It is an arithmetic number, because the mean of its divisors is an integer number (27893010627306).

Almost surely, 2^{111111001011011} is an apocalyptic number.

111111001011011 is a deficient number, since it is larger than the sum of its proper divisors (461041498213).

111111001011011 is an equidigital number, since it uses as much as digits as its factorization.

111111001011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461041498212.

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

Adding to 111111001011011 its reverse (110110100111111), we get a palindrome (221221101122122).

The spelling of 111111001011011 in words is "one hundred eleven trillion, one hundred eleven billion, one million, eleven thousand, eleven".