13203220321320 has 32 divisors (see below), whose sum is σ = 39609660964320. Its totient is φ = 3520858752320.

The previous prime is 13203220321289. The next prime is 13203220321349. The reversal of 13203220321320 is 2312302230231.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 55013417886 + ... + 55013418125.

It is an arithmetic number, because the mean of its divisors is an integer number (1237801905135).

Almost surely, 2^{13203220321320} is an apocalyptic number.

13203220321320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13203220321320 is an abundant number, since it is smaller than the sum of its proper divisors (26406440643000).

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

13203220321320 is a wasteful number, since it uses less digits than its factorization.

13203220321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110026836025 (or 110026836021 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 13203220321320 its reverse (2312302230231), we get a palindrome (15515522551551).

The spelling of 13203220321320 in words is "thirteen trillion, two hundred three billion, two hundred twenty million, three hundred twenty-one thousand, three hundred twenty".