13323320321020 has 96 divisors (see below), whose sum is σ = 28775434980096. Its totient is φ = 5178666700800.

The previous prime is 13323320320991. The next prime is 13323320321029. The reversal of 13323320321020 is 2012302332331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13323320321029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1069538632 + ... + 1069551088.

It is an arithmetic number, because the mean of its divisors is an integer number (299744114376).

Almost surely, 2^{13323320321020} is an apocalyptic number.

13323320321020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13323320321020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14387717490048).

13323320321020 is an abundant number, since it is smaller than the sum of its proper divisors (15452114659076).

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

13323320321020 is a wasteful number, since it uses less digits than its factorization.

13323320321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17591 (or 17589 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 13323320321020 its reverse (2012302332331), we get a palindrome (15335622653351).

The spelling of 13323320321020 in words is "thirteen trillion, three hundred twenty-three billion, three hundred twenty million, three hundred twenty-one thousand, twenty".