21033342443200 has 42 divisors (see below), whose sum is σ = 51755168253236. Its totient is φ = 8413336976640.

The previous prime is 21033342443177. The next prime is 21033342443203. The reversal of 21033342443200 is 234424333012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21033342443203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6572917914 + ... + 6572921113.

Almost surely, 2^{21033342443200} is an apocalyptic number.

21033342443200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21033342443200 is an abundant number, since it is smaller than the sum of its proper divisors (30721825810036).

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

21033342443200 is a wasteful number, since it uses less digits than its factorization.

21033342443200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13145839049 (or 13145839034 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 21033342443200 its reverse (234424333012), we get a palindrome (21267766776212).

The spelling of 21033342443200 in words is "twenty-one trillion, thirty-three billion, three hundred forty-two million, four hundred forty-three thousand, two hundred".