21223321330 has 32 divisors (see below), whose sum is σ = 39127999680. Its totient is φ = 8285872320.

The previous prime is 21223321321. The next prime is 21223321331. The reversal of 21223321330 is 3312332212.

It is not an unprimeable number, because it can be changed into a prime (21223321331) 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, 72276 + ... + 218335.

It is an arithmetic number, because the mean of its divisors is an integer number (1222749990).

Almost surely, 2^21223321330 is an apocalyptic number.

21223321330 is a deficient number, since it is larger than the sum of its proper divisors (17904678350).

21223321330 is a wasteful number, since it uses less digits than its factorization.

21223321330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290794.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21223321330 its reverse (3312332212), we get a palindrome (24535653542).

The spelling of 21223321330 in words is "twenty-one billion, two hundred twenty-three million, three hundred twenty-one thousand, three hundred thirty".