21221300332 has 12 divisors (see below), whose sum is σ = 37329698056. Its totient is φ = 10555672320.

The previous prime is 21221300323. The next prime is 21221300369. The reversal of 21221300332 is 23300312212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13743594 + ... + 13745137.

Almost surely, 2^21221300332 is an apocalyptic number.

It is an amenable number.

21221300332 is a deficient number, since it is larger than the sum of its proper divisors (16108397724).

21221300332 is a wasteful number, since it uses less digits than its factorization.

21221300332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27488928 (or 27488926 counting only the distinct ones).

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

Adding to 21221300332 its reverse (23300312212), we get a palindrome (44521612544).

The spelling of 21221300332 in words is "twenty-one billion, two hundred twenty-one million, three hundred thousand, three hundred thirty-two".