21233130330 has 64 divisors (see below), whose sum is σ = 51309936000. Its totient is φ = 5623368960.

The previous prime is 21233130329. The next prime is 21233130343. The reversal of 21233130330 is 3303133212.

It is a super-2 number, since 2×21233130330² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21233130297 and 21233130306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2667196 + ... + 2675144.

It is an arithmetic number, because the mean of its divisors is an integer number (801717750).

Almost surely, 2^21233130330 is an apocalyptic number.

21233130330 is an abundant number, since it is smaller than the sum of its proper divisors (30076805670).

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

21233130330 is a wasteful number, since it uses less digits than its factorization.

21233130330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8559.

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

Adding to 21233130330 its reverse (3303133212), we get a palindrome (24536263542).

The spelling of 21233130330 in words is "twenty-one billion, two hundred thirty-three million, one hundred thirty thousand, three hundred thirty".