100000200020 has 24 divisors (see below), whose sum is σ = 240000480384. Its totient is φ = 34285782816.

The previous prime is 100000199983. The next prime is 100000200059. The reversal of 100000200020 is 20002000001.

It is a Harshad number since it is a multiple of its sum of digits (5).

100000200020 is a modest number, since divided by 200020 gives 1000 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 100000199977 and 100000200013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357143432 + ... + 357143711.

It is an arithmetic number, because the mean of its divisors is an integer number (10000020016).

Almost surely, 2^100000200020 is an apocalyptic number.

100000200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100000200020 is an abundant number, since it is smaller than the sum of its proper divisors (140000280364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100000200020 is a wasteful number, since it uses less digits than its factorization.

100000200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714287159 (or 714287157 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

Adding to 100000200020 its reverse (20002000001), we get a palindrome (120002200021).

The spelling of 100000200020 in words is "one hundred billion, two hundred thousand, twenty".