200100020020 has 12 divisors (see below), whose sum is σ = 420210042084. Its totient is φ = 80040008000.

The previous prime is 200100019963. The next prime is 200100020051. The reversal of 200100020020 is 20020001002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 133409023504 + 66690996516 = 365252^2 + 258246^2 .

It is a junction number, because it is equal to n+sod(n) for n = 200100019985 and 200100020012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5002500481 + ... + 5002500520.

It is an arithmetic number, because the mean of its divisors is an integer number (35017503507).

Almost surely, 2^200100020020 is an apocalyptic number.

200100020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200100020020 is an abundant number, since it is smaller than the sum of its proper divisors (220110022064).

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

200100020020 is a wasteful number, since it uses less digits than its factorization.

200100020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10005001010 (or 10005001008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 200100020020 its reverse (20020001002), we get a palindrome (220120021022).

The spelling of 200100020020 in words is "two hundred billion, one hundred million, twenty thousand, twenty".