21110222102200 has 192 divisors, whose sum is σ = 62346800977920. Its totient is φ = 6455661888000.

The previous prime is 21110222102161. The next prime is 21110222102201. The reversal of 21110222102200 is 220122201112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110222102201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12115816 + ... + 13748215.

It is an arithmetic number, because the mean of its divisors is an integer number (324722921760).

Almost surely, 2^{21110222102200} is an apocalyptic number.

21110222102200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21110222102200 is an abundant number, since it is smaller than the sum of its proper divisors (41236578875720).

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

21110222102200 is a wasteful number, since it uses less digits than its factorization.

21110222102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25864118 (or 25864109 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21110222102200 its reverse (220122201112), we get a palindrome (21330344303312).

The spelling of 21110222102200 in words is "twenty-one trillion, one hundred ten billion, two hundred twenty-two million, one hundred two thousand, two hundred".