13321011201020 has 48 divisors (see below), whose sum is σ = 28696276425600. Its totient is φ = 5191213063680.

The previous prime is 13321011200999. The next prime is 13321011201049. The reversal of 13321011201020 is 2010211012331.

It is a self number, because there is not a number n which added to its sum of digits gives 13321011201020.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 10707455 + ... + 11886614.

It is an arithmetic number, because the mean of its divisors is an integer number (597839092200).

Almost surely, 2^{13321011201020} is an apocalyptic number.

13321011201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13321011201020 is an abundant number, since it is smaller than the sum of its proper divisors (15375265224580).

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

13321011201020 is a wasteful number, since it uses less digits than its factorization.

13321011201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22594838 (or 22594836 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13321011201020 its reverse (2010211012331), we get a palindrome (15331222213351).

The spelling of 13321011201020 in words is "thirteen trillion, three hundred twenty-one billion, eleven million, two hundred one thousand, twenty".