13221440332032 has 72 divisors (see below), whose sum is σ = 35190198551200. Its totient is φ = 4406910566400.

The previous prime is 13221440331949. The next prime is 13221440332033. The reversal of 13221440332032 is 23023304412231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13221440332033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14179344 + ... + 15082992.

Almost surely, 2^{13221440332032} is an apocalyptic number.

13221440332032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13221440332032 is an abundant number, since it is smaller than the sum of its proper divisors (21968758219168).

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

13221440332032 is an equidigital number, since it uses as much as digits as its factorization.

13221440332032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922719 (or 922705 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 13221440332032 its reverse (23023304412231), we get a palindrome (36244744744263).

The spelling of 13221440332032 in words is "thirteen trillion, two hundred twenty-one billion, four hundred forty million, three hundred thirty-two thousand, thirty-two".