21230203330 has 64 divisors (see below), whose sum is σ = 46435099392. Its totient is φ = 6822236160.

The previous prime is 21230203301. The next prime is 21230203331. The reversal of 21230203330 is 3330203212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21230203298 and 21230203307.

It is not an unprimeable number, because it can be changed into a prime (21230203331) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 249777 + ... + 323803.

It is an arithmetic number, because the mean of its divisors is an integer number (725548428).

Almost surely, 2^21230203330 is an apocalyptic number.

21230203330 is an abundant number, since it is smaller than the sum of its proper divisors (25204896062).

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

21230203330 is a wasteful number, since it uses less digits than its factorization.

21230203330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74299.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21230203330 its reverse (3330203212), we get a palindrome (24560406542).

The spelling of 21230203330 in words is "twenty-one billion, two hundred thirty million, two hundred three thousand, three hundred thirty".