21034221203200 has 108 divisors (see below), whose sum is σ = 55125512835120. Its totient is φ = 7918765588480.

The previous prime is 21034221203147. The next prime is 21034221203243. The reversal of 21034221203200 is 230212243012.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 96555820 + ... + 96773419.

It is an arithmetic number, because the mean of its divisors is an integer number (510421415140).

Almost surely, 2^{21034221203200} is an apocalyptic number.

21034221203200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21034221203200 is an abundant number, since it is smaller than the sum of its proper divisors (34091291631920).

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

21034221203200 is a wasteful number, since it uses less digits than its factorization.

21034221203200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193329282 (or 193329263 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21034221203200 its reverse (230212243012), we get a palindrome (21264433446212).

The spelling of 21034221203200 in words is "twenty-one trillion, thirty-four billion, two hundred twenty-one million, two hundred three thousand, two hundred".