21232323330 has 32 divisors (see below), whose sum is σ = 51147028800. Its totient is φ = 5640902592.

The previous prime is 21232323317. The next prime is 21232323337. The reversal of 21232323330 is 3332323212.

It is a self number, because there is not a number n which added to its sum of digits gives 21232323330.

It is not an unprimeable number, because it can be changed into a prime (21232323337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1307440 + ... + 1323579.

It is an arithmetic number, because the mean of its divisors is an integer number (1598344650).

Almost surely, 2^21232323330 is an apocalyptic number.

21232323330 is an abundant number, since it is smaller than the sum of its proper divisors (29914705470).

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

21232323330 is a wasteful number, since it uses less digits than its factorization.

21232323330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631298.

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 21232323330 its reverse (3332323212), we get a palindrome (24564646542).

The spelling of 21232323330 in words is "twenty-one billion, two hundred thirty-two million, three hundred twenty-three thousand, three hundred thirty".