21233103200 has 72 divisors (see below), whose sum is σ = 54089069328. Its totient is φ = 8123962880.

The previous prime is 21233103181. The next prime is 21233103239. The reversal of 21233103200 is 230133212.

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, 558587 + ... + 595386.

It is an arithmetic number, because the mean of its divisors is an integer number (751237074).

Almost surely, 2^21233103200 is an apocalyptic number.

21233103200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21233103200 is an abundant number, since it is smaller than the sum of its proper divisors (32855966128).

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

21233103200 is a wasteful number, since it uses less digits than its factorization.

21233103200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154016 (or 1154003 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21233103200 its reverse (230133212), we get a palindrome (21463236412).

The spelling of 21233103200 in words is "twenty-one billion, two hundred thirty-three million, one hundred three thousand, two hundred".