13231221013200 has 120 divisors (see below), whose sum is σ = 42401687904000. Its totient is φ = 3526854087680.

The previous prime is 13231221013177. The next prime is 13231221013207. The reversal of 13231221013200 is 231012213231.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231221013207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 580756 + ... + 5176844.

It is an arithmetic number, because the mean of its divisors is an integer number (353347399200).

Almost surely, 2^{13231221013200} is an apocalyptic number.

13231221013200 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 13231221013200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21200843952000).

13231221013200 is an abundant number, since it is smaller than the sum of its proper divisors (29170466890800).

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

13231221013200 is a wasteful number, since it uses less digits than its factorization.

13231221013200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4598509 (or 4598498 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13231221013200 its reverse (231012213231), we get a palindrome (13462233226431).

The spelling of 13231221013200 in words is "thirteen trillion, two hundred thirty-one billion, two hundred twenty-one million, thirteen thousand, two hundred".