13021220013020 has 24 divisors (see below), whose sum is σ = 27344633971200. Its totient is φ = 5208474301632.

The previous prime is 13021220013019. The next prime is 13021220013049. The reversal of 13021220013020 is 2031002212031.

It is a self number, because there is not a number n which added to its sum of digits gives 13021220013020.

It is a congruent number.

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, 10813541 + ... + 11957219.

It is an arithmetic number, because the mean of its divisors is an integer number (1139359748800).

Almost surely, 2^{13021220013020} is an apocalyptic number.

13021220013020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13021220013020 is an abundant number, since it is smaller than the sum of its proper divisors (14323413958180).

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

13021220013020 is a wasteful number, since it uses less digits than its factorization.

13021220013020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712957 (or 1712955 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13021220013020 its reverse (2031002212031), we get a palindrome (15052222225051).

The spelling of 13021220013020 in words is "thirteen trillion, twenty-one billion, two hundred twenty million, thirteen thousand, twenty".