21033320230230 has 384 divisors, whose sum is σ = 68840574534144. Its totient is φ = 4052069683200.

The previous prime is 21033320230189. The next prime is 21033320230231. The reversal of 21033320230230 is 3203202333012.

It is a self number, because there is not a number n which added to its sum of digits gives 21033320230230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033320230231) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 17846620 + ... + 18988640.

It is an arithmetic number, because the mean of its divisors is an integer number (179272329516).

Almost surely, 2^{21033320230230} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21033320230230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34420287267072).

21033320230230 is an abundant number, since it is smaller than the sum of its proper divisors (47807254303914).

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

21033320230230 is a wasteful number, since it uses less digits than its factorization.

21033320230230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142140 (or 1142133 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 21033320230230 its reverse (3203202333012), we get a palindrome (24236522563242).

The spelling of 21033320230230 in words is "twenty-one trillion, thirty-three billion, three hundred twenty million, two hundred thirty thousand, two hundred thirty".