13323121320020 has 24 divisors (see below), whose sum is σ = 29451110287200. Its totient is φ = 5048761763232.

The previous prime is 13323121319983. The next prime is 13323121320031. The reversal of 13323121320020 is 2002312132331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17530422410 + ... + 17530423169.

It is an arithmetic number, because the mean of its divisors is an integer number (1227129595300).

Almost surely, 2^{13323121320020} is an apocalyptic number.

13323121320020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13323121320020 is an abundant number, since it is smaller than the sum of its proper divisors (16127988967180).

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

13323121320020 is a wasteful number, since it uses less digits than its factorization.

13323121320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35060845607 (or 35060845605 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 13323121320020 its reverse (2002312132331), we get a palindrome (15325433452351).

The spelling of 13323121320020 in words is "thirteen trillion, three hundred twenty-three billion, one hundred twenty-one million, three hundred twenty thousand, twenty".