21221030332 has 12 divisors (see below), whose sum is σ = 37691084200. Its totient is φ = 10452149136.

The previous prime is 21221030287. The next prime is 21221030371. The reversal of 21221030332 is 23303012212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39591207 + ... + 39591742.

Almost surely, 2^21221030332 is an apocalyptic number.

It is an amenable number.

21221030332 is a deficient number, since it is larger than the sum of its proper divisors (16470053868).

21221030332 is a wasteful number, since it uses less digits than its factorization.

21221030332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79183020 (or 79183018 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21221030332 its reverse (23303012212), we get a palindrome (44524042544).

The spelling of 21221030332 in words is "twenty-one billion, two hundred twenty-one million, thirty thousand, three hundred thirty-two".