1001011111009 has 16 divisors (see below), whose sum is σ = 1260665160832. Its totient is φ = 773589979008.

The previous prime is 1001011110977. The next prime is 1001011111033. The reversal of 1001011111009 is 9001111101001.

It is not a de Polignac number, because 1001011111009 - 2⁵ = 1001011110977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001011110983 and 1001011111001.

It is not an unprimeable number, because it can be changed into a prime (1001011111069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127904484 + ... + 127912309.

It is an arithmetic number, because the mean of its divisors is an integer number (78791572552).

Almost surely, 2^{1001011111009} is an apocalyptic number.

It is an amenable number.

1001011111009 is a deficient number, since it is larger than the sum of its proper divisors (259654049823).

1001011111009 is a wasteful number, since it uses less digits than its factorization.

1001011111009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255816856.

The product of its (nonzero) digits is 9, while the sum is 16.

The spelling of 1001011111009 in words is "one trillion, one billion, eleven million, one hundred eleven thousand, nine".