21223103330 has 128 divisors (see below), whose sum is σ = 46271554560. Its totient is φ = 6905917440.

The previous prime is 21223103323. The next prime is 21223103359. The reversal of 21223103330 is 3330132212.

It is a super-2 number, since 2×21223103330² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7324442 + ... + 7327338.

It is an arithmetic number, because the mean of its divisors is an integer number (361496520).

Almost surely, 2^21223103330 is an apocalyptic number.

21223103330 is an abundant number, since it is smaller than the sum of its proper divisors (25048451230).

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

21223103330 is a wasteful number, since it uses less digits than its factorization.

21223103330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21223103330 its reverse (3330132212), we get a palindrome (24553235542).

The spelling of 21223103330 in words is "twenty-one billion, two hundred twenty-three million, one hundred three thousand, three hundred thirty".