21000110212200 has 144 divisors (see below), whose sum is σ = 75728968973280. Its totient is φ = 4800025184640.

The previous prime is 21000110212163. The next prime is 21000110212229. The reversal of 21000110212200 is 221201100012.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 357115332 + ... + 357174131.

It is an arithmetic number, because the mean of its divisors is an integer number (525895617870).

Almost surely, 2^{21000110212200} is an apocalyptic number.

21000110212200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21000110212200 is an abundant number, since it is smaller than the sum of its proper divisors (54728858761080).

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

21000110212200 is a wasteful number, since it uses less digits than its factorization.

21000110212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714289496 (or 714289480 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21000110212200 its reverse (221201100012), we get a palindrome (21221311312212).

The spelling of 21000110212200 in words is "twenty-one trillion, one hundred ten million, two hundred twelve thousand, two hundred".