200100100020 has 24 divisors (see below), whose sum is σ = 560280280224. Its totient is φ = 53360026656.

The previous prime is 200100099977. The next prime is 200100100033. The reversal of 200100100020 is 20001001002.

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 = 200100099981 and 200100100008.

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, 1667500774 + ... + 1667500893.

It is an arithmetic number, because the mean of its divisors is an integer number (23345011676).

Almost surely, 2^200100100020 is an apocalyptic number.

200100100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200100100020 is an abundant number, since it is smaller than the sum of its proper divisors (360180180204).

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

200100100020 is a wasteful number, since it uses less digits than its factorization.

200100100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335001679 (or 3335001677 counting only the distinct ones).

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

Adding to 200100100020 its reverse (20001001002), we get a palindrome (220101101022).

The spelling of 200100100020 in words is "two hundred billion, one hundred million, one hundred thousand, twenty".