1100020009 has 4 divisors (see below), whose sum is σ = 1200021840. Its totient is φ = 1000018180.

The previous prime is 1100019961. The next prime is 1100020021. The reversal of 1100020009 is 9000200011.

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 1100020009 - 2¹⁵ = 1099987241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100020039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50000899 + ... + 50000920.

It is an arithmetic number, because the mean of its divisors is an integer number (300005460).

Almost surely, 2^1100020009 is an apocalyptic number.

It is an amenable number.

1100020009 is a deficient number, since it is larger than the sum of its proper divisors (100001831).

1100020009 is a wasteful number, since it uses less digits than its factorization.

1100020009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100001830.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1100020009 is about 33166.5495492070. The cubic root of 1100020009 is about 1032.2863744769.

The spelling of 1100020009 in words is "one billion, one hundred million, twenty thousand, nine".