21301442332 has 12 divisors (see below), whose sum is σ = 37287063520. Its totient is φ = 10647995616.

The previous prime is 21301442329. The next prime is 21301442359. The reversal of 21301442332 is 23324410312.

It is a junction number, because it is equal to n+sod(n) for n = 21301442297 and 21301442306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663753 + ... + 695104.

Almost surely, 2^21301442332 is an apocalyptic number.

It is an amenable number.

21301442332 is a deficient number, since it is larger than the sum of its proper divisors (15985621188).

21301442332 is a wasteful number, since it uses less digits than its factorization.

21301442332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362780 (or 1362778 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21301442332 its reverse (23324410312), we get a palindrome (44625852644).

The spelling of 21301442332 in words is "twenty-one billion, three hundred one million, four hundred forty-two thousand, three hundred thirty-two".