102020100009 has 8 divisors (see below), whose sum is σ = 137748658560. Its totient is φ = 67152470736.

The previous prime is 102020099989. The next prime is 102020100071. The reversal of 102020100009 is 900001020201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102020100009 - 2⁹ = 102020099497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102020100079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215232042 + ... + 215232515.

It is an arithmetic number, because the mean of its divisors is an integer number (17218582320).

Almost surely, 2^102020100009 is an apocalyptic number.

It is an amenable number.

102020100009 is a deficient number, since it is larger than the sum of its proper divisors (35728558551).

102020100009 is an equidigital number, since it uses as much as digits as its factorization.

102020100009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430464639.

The product of its (nonzero) digits is 36, while the sum is 15.

The spelling of 102020100009 in words is "one hundred two billion, twenty million, one hundred thousand, nine".