21110200211100 has 288 divisors, whose sum is σ = 82007962154496. Its totient is φ = 4049109273600.

The previous prime is 21110200211071. The next prime is 21110200211131. The reversal of 21110200211100 is 111200201112.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 34848219 + ... + 35448818.

It is an arithmetic number, because the mean of its divisors is an integer number (284749868592).

Almost surely, 2^{21110200211100} is an apocalyptic number.

21110200211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21110200211100 is an abundant number, since it is smaller than the sum of its proper divisors (60897761943396).

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

21110200211100 is a wasteful number, since it uses less digits than its factorization.

21110200211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70297085 (or 70297078 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21110200211100 its reverse (111200201112), we get a palindrome (21221400412212).

The spelling of 21110200211100 in words is "twenty-one trillion, one hundred ten billion, two hundred million, two hundred eleven thousand, one hundred".