200100020200020 has 48 divisors (see below), whose sum is σ = 622533396179520. Its totient is φ = 53360005386528.

The previous prime is 200100020199997. The next prime is 200100020200033. The reversal of 200100020200020 is 20002020001002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 200100020199975 and 200100020200011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185277795942 + ... + 185277797021.

It is an arithmetic number, because the mean of its divisors is an integer number (12969445753740).

Almost surely, 2^{200100020200020} is an apocalyptic number.

200100020200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200100020200020 is an abundant number, since it is smaller than the sum of its proper divisors (422433375979500).

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

200100020200020 is a wasteful number, since it uses less digits than its factorization.

200100020200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370555592981 (or 370555592973 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 200100020200020 its reverse (20002020001002), we get a palindrome (220102040201022).

The spelling of 200100020200020 in words is "two hundred trillion, one hundred billion, twenty million, two hundred thousand, twenty".