1011010101111 has 6 divisors (see below), whose sum is σ = 1460347923840. Its totient is φ = 674006734068.

The previous prime is 1011010101109. The next prime is 1011010101121. The reversal of 1011010101111 is 1111010101101.

It is not a de Polignac number, because 1011010101111 - 2¹ = 1011010101109 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: 112334455679 = 1011010101111 / (1 + 0 + 1 + 1 + 0 + 1 + 0 + 1 + 0 + 1 + 1 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 1011010101093 and 1011010101102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011010101121) 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, 56167227831 + ... + 56167227848.

It is an arithmetic number, because the mean of its divisors is an integer number (243391320640).

Almost surely, 2^{1011010101111} is an apocalyptic number.

1011010101111 is a deficient number, since it is larger than the sum of its proper divisors (449337822729).

1011010101111 is a wasteful number, since it uses less digits than its factorization.

1011010101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112334455685 (or 112334455682 counting only the distinct ones).

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

Adding to 1011010101111 its reverse (1111010101101), we get a palindrome (2122020202212).

The spelling of 1011010101111 in words is "one trillion, eleven billion, ten million, one hundred one thousand, one hundred eleven".