1009091111111 has 16 divisors (see below), whose sum is σ = 1022811546240. Its totient is φ = 995465583840.

The previous prime is 1009091111107. The next prime is 1009091111153. The reversal of 1009091111111 is 1111111909001.

1009091111111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1009091111111 - 2² = 1009091111107 is a prime.

It is a Duffinian number.

1009091111111 is a modest number, since divided by 1111111 gives 100909 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009091111191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103100360 + ... + 103110146.

It is an arithmetic number, because the mean of its divisors is an integer number (63925721640).

Almost surely, 2^{1009091111111} is an apocalyptic number.

1009091111111 is a deficient number, since it is larger than the sum of its proper divisors (13720435129).

1009091111111 is a wasteful number, since it uses less digits than its factorization.

1009091111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14494.

The product of its (nonzero) digits is 81, while the sum is 26.

The spelling of 1009091111111 in words is "one trillion, nine billion, ninety-one million, one hundred eleven thousand, one hundred eleven".