32281221612 has 48 divisors (see below), whose sum is σ = 77233409792. Its totient is φ = 10488502080.

The previous prime is 32281221611. The next prime is 32281221649. The reversal of 32281221612 is 21612218223.

It is a self number, because there is not a number n which added to its sum of digits gives 32281221612.

It is not an unprimeable number, because it can be changed into a prime (32281221611) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 187062 + ... + 315522.

Almost surely, 2^32281221612 is an apocalyptic number.

It is an amenable number.

32281221612 is an abundant number, since it is smaller than the sum of its proper divisors (44952188180).

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

32281221612 is a wasteful number, since it uses less digits than its factorization.

32281221612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128998 (or 128996 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

Adding to 32281221612 its reverse (21612218223), we get a palindrome (53893439835).

The spelling of 32281221612 in words is "thirty-two billion, two hundred eighty-one million, two hundred twenty-one thousand, six hundred twelve".