1001111111009 has 4 divisors (see below), whose sum is σ = 1001179011504. Its totient is φ = 1001043210516.

The previous prime is 1001111110981. The next prime is 1001111111029. The reversal of 1001111111009 is 9001111111001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1001111111009 - 2²⁴ = 1001094333793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001111111029) 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, 33928127 + ... + 33957620.

It is an arithmetic number, because the mean of its divisors is an integer number (250294752876).

Almost surely, 2^{1001111111009} is an apocalyptic number.

It is an amenable number.

1001111111009 is a deficient number, since it is larger than the sum of its proper divisors (67900495).

1001111111009 is an equidigital number, since it uses as much as digits as its factorization.

1001111111009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67900494.

The product of its (nonzero) digits is 9, while the sum is 17.

The spelling of 1001111111009 in words is "one trillion, one billion, one hundred eleven million, one hundred eleven thousand, nine".