1000111001009 has 4 divisors (see below), whose sum is σ = 1000189410804. Its totient is φ = 1000032591216.

The previous prime is 1000111001003. The next prime is 1000111001063. The reversal of 1000111001009 is 9001001110001.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 876367461025 + 123743539984 = 936145^2 + 351772^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000111001009 - 2⁸ = 1000111000753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000111000984 and 1000111001002.

It is not an unprimeable number, because it can be changed into a prime (1000111001003) 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, 39185762 + ... + 39211275.

It is an arithmetic number, because the mean of its divisors is an integer number (250047352701).

Almost surely, 2^{1000111001009} is an apocalyptic number.

It is an amenable number.

1000111001009 is a deficient number, since it is larger than the sum of its proper divisors (78409795).

1000111001009 is an equidigital number, since it uses as much as digits as its factorization.

1000111001009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78409794.

The product of its (nonzero) digits is 9, while the sum is 14.

The spelling of 1000111001009 in words is "one trillion, one hundred eleven million, one thousand, nine".