200001100020 has 24 divisors (see below), whose sum is σ = 560003080224. Its totient is φ = 53333626656.

The previous prime is 200001100009. The next prime is 200001100037. The reversal of 200001100020 is 20001100002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 200001099981 and 200001100008.

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, 1666675774 + ... + 1666675893.

It is an arithmetic number, because the mean of its divisors is an integer number (23333461676).

Almost surely, 2^200001100020 is an apocalyptic number.

200001100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200001100020 is an abundant number, since it is smaller than the sum of its proper divisors (360001980204).

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

200001100020 is a wasteful number, since it uses less digits than its factorization.

200001100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333351679 (or 3333351677 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 200001100020 its reverse (20001100002), we get a palindrome (220002200022).

The spelling of 200001100020 in words is "two hundred billion, one million, one hundred thousand, twenty".