21021041233200 has 240 divisors, whose sum is σ = 69672874713120. Its totient is φ = 5411265699840.

The previous prime is 21021041233183. The next prime is 21021041233219. The reversal of 21021041233200 is 233214012012.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 188316604 + ... + 188428196.

It is an arithmetic number, because the mean of its divisors is an integer number (290303644638).

Almost surely, 2^{21021041233200} is an apocalyptic number.

21021041233200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21021041233200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34836437356560).

21021041233200 is an abundant number, since it is smaller than the sum of its proper divisors (48651833479920).

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

21021041233200 is a wasteful number, since it uses less digits than its factorization.

21021041233200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117056 (or 117045 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21021041233200 its reverse (233214012012), we get a palindrome (21254255245212).

The spelling of 21021041233200 in words is "twenty-one trillion, twenty-one billion, forty-one million, two hundred thirty-three thousand, two hundred".