101000020009 has 4 divisors (see below), whose sum is σ = 115428594304. Its totient is φ = 86571445716.

The previous prime is 101000019997. The next prime is 101000020021. The reversal of 101000020009 is 900020000101.

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, and also an emirpimes, since its reverse is a distinct semiprime: 900020000101 = 239 ⋅3765774059.

It is an interprime number because it is at equal distance from previous prime (101000019997) and next prime (101000020021).

It is not a de Polignac number, because 101000020009 - 2⁷ = 101000019881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101000020039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7214287137 + ... + 7214287150.

It is an arithmetic number, because the mean of its divisors is an integer number (28857148576).

Almost surely, 2^101000020009 is an apocalyptic number.

It is an amenable number.

101000020009 is a deficient number, since it is larger than the sum of its proper divisors (14428574295).

101000020009 is an equidigital number, since it uses as much as digits as its factorization.

101000020009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14428574294.

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

The spelling of 101000020009 in words is "one hundred one billion, twenty thousand, nine".