20111102200100 has 18 divisors (see below), whose sum is σ = 43641091774434. Its totient is φ = 8044440880000.

The previous prime is 20111102200051. The next prime is 20111102200117. The reversal of 20111102200100 is 100220111102.

It can be written as a sum of positive squares in 3 ways, for example, as 1629993530944 + 18481108669156 = 1276712^2 + 4298966^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100555510901 + ... + 100555511100.

Almost surely, 2^{20111102200100} is an apocalyptic number.

20111102200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111102200100 is an abundant number, since it is smaller than the sum of its proper divisors (23529989574334).

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

20111102200100 is a wasteful number, since it uses less digits than its factorization.

20111102200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201111022015 (or 201111022008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20111102200100 its reverse (100220111102), we get a palindrome (20211322311202).

The spelling of 20111102200100 in words is "twenty trillion, one hundred eleven billion, one hundred two million, two hundred thousand, one hundred".