21100200110200 has 24 divisors (see below), whose sum is σ = 49057965256680. Its totient is φ = 8440080044000.

The previous prime is 21100200110189. The next prime is 21100200110251. The reversal of 21100200110200 is 201100200112.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52750500076 + ... + 52750500475.

It is an arithmetic number, because the mean of its divisors is an integer number (2044081885695).

Almost surely, 2^{21100200110200} is an apocalyptic number.

21100200110200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21100200110200 is an abundant number, since it is smaller than the sum of its proper divisors (27957765146480).

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

21100200110200 is a wasteful number, since it uses less digits than its factorization.

21100200110200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105501000567 (or 105501000558 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21100200110200 its reverse (201100200112), we get a palindrome (21301300310312).

The spelling of 21100200110200 in words is "twenty-one trillion, one hundred billion, two hundred million, one hundred ten thousand, two hundred".