100001111009 has 4 divisors (see below), whose sum is σ = 101370989316. Its totient is φ = 98631232704.

The previous prime is 100001110969. The next prime is 100001111027. The reversal of 100001111009 is 900111100001.

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 54921328609 + 45079782400 = 234353^2 + 212320^2 .

It is a cyclic number.

It is not a de Polignac number, because 100001111009 - 2⁸ = 100001110753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100001110984 and 100001111002.

It is not an unprimeable number, because it can be changed into a prime (100001117009) 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, 684939044 + ... + 684939189.

It is an arithmetic number, because the mean of its divisors is an integer number (25342747329).

Almost surely, 2^100001111009 is an apocalyptic number.

It is an amenable number.

100001111009 is a deficient number, since it is larger than the sum of its proper divisors (1369878307).

100001111009 is an equidigital number, since it uses as much as digits as its factorization.

100001111009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369878306.

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

The spelling of 100001111009 in words is "one hundred billion, one million, one hundred eleven thousand, nine".