21202000200100 has 72 divisors (see below), whose sum is σ = 47304410823936. Its totient is φ = 8243419680000.

The previous prime is 21202000200067. The next prime is 21202000200107. The reversal of 21202000200100 is 100200020212.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (21202000200107) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 8429896 + ... + 10652095.

It is an arithmetic number, because the mean of its divisors is an integer number (657005705888).

Almost surely, 2^{21202000200100} is an apocalyptic number.

21202000200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202000200100 is an abundant number, since it is smaller than the sum of its proper divisors (26102410623836).

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

21202000200100 is a wasteful number, since it uses less digits than its factorization.

21202000200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19082317 (or 19082310 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 21202000200100 its reverse (100200020212), we get a palindrome (21302200220312).

The spelling of 21202000200100 in words is "twenty-one trillion, two hundred two billion, two hundred thousand, one hundred".