13021322331220 has 96 divisors (see below), whose sum is σ = 31438098349056. Its totient is φ = 4437760166400.

The previous prime is 13021322331217. The next prime is 13021322331239. The reversal of 13021322331220 is 2213322312031.

13021322331220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127370325 + ... + 127472515.

It is an arithmetic number, because the mean of its divisors is an integer number (327480191136).

Almost surely, 2^{13021322331220} is an apocalyptic number.

13021322331220 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 13021322331220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15719049174528).

13021322331220 is an abundant number, since it is smaller than the sum of its proper divisors (18416776017836).

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

13021322331220 is a wasteful number, since it uses less digits than its factorization.

13021322331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107641 (or 107639 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 13021322331220 its reverse (2213322312031), we get a palindrome (15234644643251).

The spelling of 13021322331220 in words is "thirteen trillion, twenty-one billion, three hundred twenty-two million, three hundred thirty-one thousand, two hundred twenty".