32320221312 has 64 divisors (see below), whose sum is σ = 86184900000. Its totient is φ = 10731454464.

The previous prime is 32320221293. The next prime is 32320221317. The reversal of 32320221312 is 21312202323.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (32320221317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65062 + ... + 262437.

Almost surely, 2^32320221312 is an apocalyptic number.

32320221312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

32320221312 is an abundant number, since it is smaller than the sum of its proper divisors (53864678688).

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

32320221312 is a wasteful number, since it uses less digits than its factorization.

32320221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327773 (or 327761 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 32320221312 its reverse (21312202323), we get a palindrome (53632423635).

The spelling of 32320221312 in words is "thirty-two billion, three hundred twenty million, two hundred twenty-one thousand, three hundred twelve".