13321011313220 has 96 divisors (see below), whose sum is σ = 30484179726336. Its totient is φ = 4860354240000.

The previous prime is 13321011313219. The next prime is 13321011313241. The reversal of 13321011313220 is 2231311012331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7484390 + ... + 9091650.

It is an arithmetic number, because the mean of its divisors is an integer number (317543538816).

Almost surely, 2^{13321011313220} is an apocalyptic number.

13321011313220 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 13321011313220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15242089863168).

13321011313220 is an abundant number, since it is smaller than the sum of its proper divisors (17163168413116).

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

13321011313220 is a wasteful number, since it uses less digits than its factorization.

13321011313220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607661 (or 1607659 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 13321011313220 its reverse (2231311012331), we get a palindrome (15552322325551).

The spelling of 13321011313220 in words is "thirteen trillion, three hundred twenty-one billion, eleven million, three hundred thirteen thousand, two hundred twenty".