21233300000000 has 648 divisors, whose sum is σ = 58685126203200. Its totient is φ = 7603200000000.

The previous prime is 21233299999987. The next prime is 21233300000057. The reversal of 21233300000000 is 333212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 106699999901 + ... + 106700000099.

Almost surely, 2^{21233300000000} is an apocalyptic number.

21233300000000 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 21233300000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29342563101600).

21233300000000 is an abundant number, since it is smaller than the sum of its proper divisors (37451826203200).

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

21233300000000 is an frugal number, since it uses more digits than its factorization.

21233300000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 21233300000000 its reverse (333212), we get a palindrome (21233300333212).

The spelling of 21233300000000 in words is "twenty-one trillion, two hundred thirty-three billion, three hundred million", and thus it is an aban number.