111010101001011 has 6 divisors (see below), whose sum is σ = 160347923668140. Its totient is φ = 74006734000668.

The previous prime is 111010101001003. The next prime is 111010101001039. The reversal of 111010101001011 is 110100101010111.

It is not a de Polignac number, because 111010101001011 - 2³ = 111010101001003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 12334455666779 = 111010101001011 / (1 + 1 + 1 + 0 + 1 + 0 + 1 + 0 + 1 + 0 + 0 + 1 + 0 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 111010101000984 and 111010101001002.

It is not an unprimeable number, because it can be changed into a prime (111010101051011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6167227833381 + ... + 6167227833398.

It is an arithmetic number, because the mean of its divisors is an integer number (26724653944690).

Almost surely, 2^{111010101001011} is an apocalyptic number.

111010101001011 is a deficient number, since it is larger than the sum of its proper divisors (49337822667129).

111010101001011 is a wasteful number, since it uses less digits than its factorization.

111010101001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12334455666785 (or 12334455666782 counting only the distinct ones).

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

Adding to 111010101001011 its reverse (110100101010111), we get a palindrome (221110202011122).

The spelling of 111010101001011 in words is "one hundred eleven trillion, ten billion, one hundred one million, one thousand, eleven".