21233103330 has 128 divisors (see below), whose sum is σ = 52501413888. Its totient is φ = 5494148352.

The previous prime is 21233103293. The next prime is 21233103341. The reversal of 21233103330 is 3330133212.

It is a junction number, because it is equal to n+sod(n) for n = 21233103297 and 21233103306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56925024 + ... + 56925396.

It is an arithmetic number, because the mean of its divisors is an integer number (410167296).

Almost surely, 2^21233103330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21233103330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26250706944).

21233103330 is an abundant number, since it is smaller than the sum of its proper divisors (31268310558).

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

21233103330 is a wasteful number, since it uses less digits than its factorization.

21233103330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21233103330 its reverse (3330133212), we get a palindrome (24563236542).

The spelling of 21233103330 in words is "twenty-one billion, two hundred thirty-three million, one hundred three thousand, three hundred thirty".