20111202200100 has 576 divisors, whose sum is σ = 65358046817280. Its totient is φ = 4733508249600.

The previous prime is 20111202200069. The next prime is 20111202200107. The reversal of 20111202200100 is 100220211102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20111202200107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5288244799 + ... + 5288248601.

It is an arithmetic number, because the mean of its divisors is an integer number (113468831280).

Almost surely, 2^{20111202200100} is an apocalyptic number.

20111202200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20111202200100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32679023408640).

20111202200100 is an abundant number, since it is smaller than the sum of its proper divisors (45246844617180).

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

20111202200100 is a wasteful number, since it uses less digits than its factorization.

20111202200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220 (or 4213 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20111202200100 its reverse (100220211102), we get a palindrome (20211422411202).

It can be divided in two parts, 20111202 and 200100, that added together give a palindrome (20311302).

The spelling of 20111202200100 in words is "twenty trillion, one hundred eleven billion, two hundred two million, two hundred thousand, one hundred".