13321321220424 has 192 divisors, whose sum is σ = 41647208140800. Its totient is φ = 3529052343936.

The previous prime is 13321321220351. The next prime is 13321321220453. The reversal of 13321321220424 is 42402212312331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13321321220391 and 13321321220400.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5292304 + ... + 7392639.

It is an arithmetic number, because the mean of its divisors is an integer number (216912542400).

Almost surely, 2^{13321321220424} is an apocalyptic number.

13321321220424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13321321220424 is an abundant number, since it is smaller than the sum of its proper divisors (28325886920376).

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

13321321220424 is a wasteful number, since it uses less digits than its factorization.

13321321220424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12685032 (or 12685021 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 13321321220424 its reverse (42402212312331), we get a palindrome (55723533532755).

The spelling of 13321321220424 in words is "thirteen trillion, three hundred twenty-one billion, three hundred twenty-one million, two hundred twenty thousand, four hundred twenty-four".