13221254452120 has 192 divisors, whose sum is σ = 37066584492000. Its totient is φ = 4204329338880.

The previous prime is 13221254452099. The next prime is 13221254452187. The reversal of 13221254452120 is 2125445212231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4334205 + ... + 6725164.

Almost surely, 2^{13221254452120} is an apocalyptic number.

13221254452120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13221254452120 is an abundant number, since it is smaller than the sum of its proper divisors (23845330039880).

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

13221254452120 is a wasteful number, since it uses less digits than its factorization.

13221254452120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11059434 (or 11059419 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 13221254452120 its reverse (2125445212231), we get a palindrome (15346699664351).

The spelling of 13221254452120 in words is "thirteen trillion, two hundred twenty-one billion, two hundred fifty-four million, four hundred fifty-two thousand, one hundred twenty".