21030223332 has 12 divisors (see below), whose sum is σ = 49070521136. Its totient is φ = 7010074440.

The previous prime is 21030223307. The next prime is 21030223339. The reversal of 21030223332 is 23332203012.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 21030223299 and 21030223308.

It is not an unprimeable number, because it can be changed into a prime (21030223339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876259294 + ... + 876259317.

Almost surely, 2^21030223332 is an apocalyptic number.

It is an amenable number.

21030223332 is an abundant number, since it is smaller than the sum of its proper divisors (28040297804).

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

21030223332 is a wasteful number, since it uses less digits than its factorization.

21030223332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752518618 (or 1752518616 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21030223332 its reverse (23332203012), we get a palindrome (44362426344).

The spelling of 21030223332 in words is "twenty-one billion, thirty million, two hundred twenty-three thousand, three hundred thirty-two".