21233230230 has 32 divisors (see below), whose sum is σ = 51001713504. Its totient is φ = 5657532416.

The previous prime is 21233230223. The next prime is 21233230243. The reversal of 21233230230 is 3203233212.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21233230197 and 21233230206.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 254277 + ... + 327296.

It is an arithmetic number, because the mean of its divisors is an integer number (1593803547).

Almost surely, 2^21233230230 is an apocalyptic number.

21233230230 is an abundant number, since it is smaller than the sum of its proper divisors (29768483274).

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

21233230230 is a wasteful number, since it uses less digits than its factorization.

21233230230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582800.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21233230230 its reverse (3203233212), we get a palindrome (24436463442).

The spelling of 21233230230 in words is "twenty-one billion, two hundred thirty-three million, two hundred thirty thousand, two hundred thirty".