21304223330 has 64 divisors (see below), whose sum is σ = 41892802560. Its totient is φ = 7753584384.

The previous prime is 21304223267. The next prime is 21304223351. The reversal of 21304223330 is 3332240312.

It is a junction number, because it is equal to n+sod(n) for n = 21304223296 and 21304223305.

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, 2587961 + ... + 2596179.

It is an arithmetic number, because the mean of its divisors is an integer number (654575040).

Almost surely, 2^21304223330 is an apocalyptic number.

21304223330 is a deficient number, since it is larger than the sum of its proper divisors (20588579230).

21304223330 is a wasteful number, since it uses less digits than its factorization.

21304223330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8523.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21304223330 its reverse (3332240312), we get a palindrome (24636463642).

The spelling of 21304223330 in words is "twenty-one billion, three hundred four million, two hundred twenty-three thousand, three hundred thirty".