21322323330 has 64 divisors (see below), whose sum is σ = 63800828928. Its totient is φ = 4430612160.

The previous prime is 21322323329. The next prime is 21322323359. The reversal of 21322323330 is 3332322312.

It is a self number, because there is not a number n which added to its sum of digits gives 21322323330.

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, 4612912 + ... + 4617531.

It is an arithmetic number, because the mean of its divisors is an integer number (996887952).

Almost surely, 2^21322323330 is an apocalyptic number.

21322323330 is an abundant number, since it is smaller than the sum of its proper divisors (42478505598).

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

21322323330 is a wasteful number, since it uses less digits than its factorization.

21322323330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9230471.

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

Adding to 21322323330 its reverse (3332322312), we get a palindrome (24654645642).

The spelling of 21322323330 in words is "twenty-one billion, three hundred twenty-two million, three hundred twenty-three thousand, three hundred thirty".