111011101011 has 12 divisors (see below), whose sum is σ = 160695701088. Its totient is φ = 73847554704.

The previous prime is 111011101001. The next prime is 111011101027. The reversal of 111011101011 is 110101110111.

It is not a de Polignac number, because 111011101011 - 2¹¹ = 111011098963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 111011100984 and 111011101002.

It is not an unprimeable number, because it can be changed into a prime (111011101001) 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, 13316100 + ... + 13324433.

It is an arithmetic number, because the mean of its divisors is an integer number (13391308424).

Almost surely, 2^111011101011 is an apocalyptic number.

111011101011 is a deficient number, since it is larger than the sum of its proper divisors (49684600077).

111011101011 is a wasteful number, since it uses less digits than its factorization.

111011101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26641002 (or 26640999 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 111011101011 its reverse (110101110111), we get a palindrome (221112211122).

The spelling of 111011101011 in words is "one hundred eleven billion, eleven million, one hundred one thousand, eleven".