1101000001009 has 4 divisors (see below), whose sum is σ = 1111900991220. Its totient is φ = 1090099010800.

The previous prime is 1101000000943. The next prime is 1101000001019. The reversal of 1101000001009 is 9001000001011.

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 546310200384 + 554689800625 = 739128^2 + 744775^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101000001009 - 2¹⁵ = 1100999968241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1101000001009.

It is not an unprimeable number, because it can be changed into a prime (1101000001019) 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, 5450494954 + ... + 5450495155.

It is an arithmetic number, because the mean of its divisors is an integer number (277975247805).

Almost surely, 2^{1101000001009} is an apocalyptic number.

It is an amenable number.

1101000001009 is a deficient number, since it is larger than the sum of its proper divisors (10900990211).

1101000001009 is a wasteful number, since it uses less digits than its factorization.

1101000001009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10900990210.

The product of its (nonzero) digits is 9, while the sum is 13.

The spelling of 1101000001009 in words is "one trillion, one hundred one billion, one thousand, nine".