200100020110020 has 72 divisors (see below), whose sum is σ = 606986988316800. Its totient is φ = 53358517247040.

The previous prime is 200100020110013. The next prime is 200100020110037. The reversal of 200100020110020 is 20011020001002.

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 = 200100020109984 and 200100020110011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9021436 + ... + 21945075.

Almost surely, 2^{200100020110020} is an apocalyptic number.

200100020110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200100020110020 is an abundant number, since it is smaller than the sum of its proper divisors (406886968206780).

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

200100020110020 is a wasteful number, since it uses less digits than its factorization.

200100020110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31002425 (or 31002420 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 200100020110020 its reverse (20011020001002), we get a palindrome (220111040111022).

The spelling of 200100020110020 in words is "two hundred trillion, one hundred billion, twenty million, one hundred ten thousand, twenty".