21200101022200 has 24 divisors (see below), whose sum is σ = 49290234877080. Its totient is φ = 8480040408800.

The previous prime is 21200101022189. The next prime is 21200101022257. The reversal of 21200101022200 is 222010100212.

It is a happy number.

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, 53000252356 + ... + 53000252755.

It is an arithmetic number, because the mean of its divisors is an integer number (2053759786545).

Almost surely, 2^{21200101022200} is an apocalyptic number.

21200101022200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21200101022200 is an abundant number, since it is smaller than the sum of its proper divisors (28090133854880).

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

21200101022200 is a wasteful number, since it uses less digits than its factorization.

21200101022200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106000505127 (or 106000505118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21200101022200 its reverse (222010100212), we get a palindrome (21422111122412).

The spelling of 21200101022200 in words is "twenty-one trillion, two hundred billion, one hundred one million, twenty-two thousand, two hundred".