21223304330 has 16 divisors (see below), whose sum is σ = 38203661664. Its totient is φ = 8488940880.

The previous prime is 21223304327. The next prime is 21223304341. The reversal of 21223304330 is 3340332212.

It is a junction number, because it is equal to n+sod(n) for n = 21223304296 and 21223304305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326225 + ... + 385835.

It is an arithmetic number, because the mean of its divisors is an integer number (2387728854).

Almost surely, 2^21223304330 is an apocalyptic number.

21223304330 is a deficient number, since it is larger than the sum of its proper divisors (16980357334).

21223304330 is a wasteful number, since it uses less digits than its factorization.

21223304330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95221.

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

Adding to 21223304330 its reverse (3340332212), we get a palindrome (24563636542).

The spelling of 21223304330 in words is "twenty-one billion, two hundred twenty-three million, three hundred four thousand, three hundred thirty".