20002001200100 has 72 divisors (see below), whose sum is σ = 43595708732520. Its totient is φ = 7965579847680.

The previous prime is 20002001200061. The next prime is 20002001200109. The reversal of 20002001200100 is 100210020002.

It can be written as a sum of positive squares in 12 ways, for example, as 1702017688996 + 18299983511104 = 1304614^2 + 4277848^2 .

It is not an unprimeable number, because it can be changed into a prime (20002001200109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29225414 + ... + 29901986.

Almost surely, 2^{20002001200100} is an apocalyptic number.

20002001200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002001200100 is an abundant number, since it is smaller than the sum of its proper divisors (23593707532420).

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

20002001200100 is a wasteful number, since it uses less digits than its factorization.

20002001200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677889 (or 677882 counting only the distinct ones).

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

Adding to 20002001200100 its reverse (100210020002), we get a palindrome (20102211220102).

The spelling of 20002001200100 in words is "twenty trillion, two billion, one million, two hundred thousand, one hundred".