1111010111111 has 4 divisors (see below), whose sum is σ = 1118086608792. Its totient is φ = 1103933613432.

The previous prime is 1111010111077. The next prime is 1111010111119. The reversal of 1111010111111 is 1111110101111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111010111111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111010111092 and 1111010111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111010111119) 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, 3538248605 + ... + 3538248918.

It is an arithmetic number, because the mean of its divisors is an integer number (279521652198).

Almost surely, 2^{1111010111111} is an apocalyptic number.

1111010111111 is a deficient number, since it is larger than the sum of its proper divisors (7076497681).

1111010111111 is an equidigital number, since it uses as much as digits as its factorization.

1111010111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7076497680.

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

Adding to 1111010111111 its reverse (1111110101111), we get a palindrome (2222120212222).

It can be divided in two parts, 11110101111 and 11, that multiplied together give a palindrome (122211112221).

The spelling of 1111010111111 in words is "one trillion, one hundred eleven billion, ten million, one hundred eleven thousand, one hundred eleven".