21232230330 has 32 divisors (see below), whose sum is σ = 50994728064. Its totient is φ = 5657775296.

The previous prime is 21232230329. The next prime is 21232230391. The reversal of 21232230330 is 3303223212.

It is a junction number, because it is equal to n+sod(n) for n = 21232230297 and 21232230306.

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 15 ways as a sum of consecutive naturals, for example, 217857 + ... + 299876.

It is an arithmetic number, because the mean of its divisors is an integer number (1593585252).

Almost surely, 2^21232230330 is an apocalyptic number.

21232230330 is an abundant number, since it is smaller than the sum of its proper divisors (29762497734).

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

21232230330 is a wasteful number, since it uses less digits than its factorization.

21232230330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519110.

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

Adding to 21232230330 its reverse (3303223212), we get a palindrome (24535453542).

The spelling of 21232230330 in words is "twenty-one billion, two hundred thirty-two million, two hundred thirty thousand, three hundred thirty".