21304233330 has 64 divisors (see below), whose sum is σ = 53144961408. Its totient is φ = 5460963840.

The previous prime is 21304233319. The next prime is 21304233343. The reversal of 21304233330 is 3333240312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21304233330.

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, 23491 + ... + 207750.

It is an arithmetic number, because the mean of its divisors is an integer number (830390022).

Almost surely, 2^21304233330 is an apocalyptic number.

21304233330 is an abundant number, since it is smaller than the sum of its proper divisors (31840728078).

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

21304233330 is a wasteful number, since it uses less digits than its factorization.

21304233330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231371.

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

Adding to 21304233330 its reverse (3333240312), we get a palindrome (24637473642).

The spelling of 21304233330 in words is "twenty-one billion, three hundred four million, two hundred thirty-three thousand, three hundred thirty".