1111010101011 has 6 divisors (see below), whose sum is σ = 1604792368140. Its totient is φ = 740673400668.

The previous prime is 1111010101009. The next prime is 1111010101043. The reversal of 1111010101011 is 1101010101111.

It is not a de Polignac number, because 1111010101011 - 2¹ = 1111010101009 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: 123445566779 = 1111010101011 / (1 + 1 + 1 + 1 + 0 + 1 + 0 + 1 + 0 + 1 + 0 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 1111010100984 and 1111010101002.

It is not an unprimeable number, because it can be changed into a prime (1111010181011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61722783381 + ... + 61722783398.

It is an arithmetic number, because the mean of its divisors is an integer number (267465394690).

Almost surely, 2^{1111010101011} is an apocalyptic number.

1111010101011 is a deficient number, since it is larger than the sum of its proper divisors (493782267129).

1111010101011 is a wasteful number, since it uses less digits than its factorization.

1111010101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123445566785 (or 123445566782 counting only the distinct ones).

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

Adding to 1111010101011 its reverse (1101010101111), we get a palindrome (2212020202122).

It can be divided in two parts, 11 and 11010101011, that multiplied together give a palindrome (121111111121).

The spelling of 1111010101011 in words is "one trillion, one hundred eleven billion, ten million, one hundred one thousand, eleven".