13225221611520 has 224 divisors, whose sum is σ = 42326584058880. Its totient is φ = 3526020956160.

The previous prime is 13225221611449. The next prime is 13225221611549. The reversal of 13225221611520 is 2511612252231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973079925 + ... + 973093515.

Almost surely, 2^{13225221611520} is an apocalyptic number.

13225221611520 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 13225221611520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21163292029440).

13225221611520 is an abundant number, since it is smaller than the sum of its proper divisors (29101362447360).

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

13225221611520 is an equidigital number, since it uses as much as digits as its factorization.

13225221611520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21544 (or 21520 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 13225221611520 its reverse (2511612252231), we get a palindrome (15736833863751).

The spelling of 13225221611520 in words is "thirteen trillion, two hundred twenty-five billion, two hundred twenty-one million, six hundred eleven thousand, five hundred twenty".