1000000001111 has 4 divisors (see below), whose sum is σ = 1034482759800. Its totient is φ = 965517242424.

The previous prime is 1000000001083. The next prime is 1000000001123. The reversal of 1000000001111 is 1111000000001.

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

It is a cyclic number.

It is not a de Polignac number, because 1000000001111 - 2¹⁸ = 999999738967 is a prime.

It is a Duffinian number.

1000000001111 is a modest number, since divided by 1111 gives 1 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1000000001095 and 1000000001104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000000001911) 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 3 ways as a sum of consecutive naturals, for example, 17241379301 + ... + 17241379358.

It is an arithmetic number, because the mean of its divisors is an integer number (258620689950).

Almost surely, 2^{1000000001111} is an apocalyptic number.

1000000001111 is a deficient number, since it is larger than the sum of its proper divisors (34482758689).

1000000001111 is an equidigital number, since it uses as much as digits as its factorization.

1000000001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34482758688.

The product of its (nonzero) digits is 1, while the sum is 5.

Adding to 1000000001111 its reverse (1111000000001), we get a palindrome (2111000001112).

It can be divided in two parts, 1000000001 and 111, that multiplied together give a palindrome (111000000111).

The spelling of 1000000001111 in words is "one trillion, one thousand, one hundred eleven".