21442302232 has 48 divisors (see below), whose sum is σ = 46095774840. Its totient is φ = 9314293248.

The previous prime is 21442302227. The next prime is 21442302293. The reversal of 21442302232 is 23220324412.

It is a junction number, because it is equal to n+sod(n) for n = 21442302197 and 21442302206.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 443478 + ... + 489445.

Almost surely, 2^21442302232 is an apocalyptic number.

It is an amenable number.

21442302232 is an abundant number, since it is smaller than the sum of its proper divisors (24653472608).

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

21442302232 is a wasteful number, since it uses less digits than its factorization.

21442302232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932972 (or 932955 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 21442302232 its reverse (23220324412), we get a palindrome (44662626644).

The spelling of 21442302232 in words is "twenty-one billion, four hundred forty-two million, three hundred two thousand, two hundred thirty-two".