13021301121020 has 48 divisors (see below), whose sum is σ = 27450466982400. Its totient is φ = 5188418141760.

The previous prime is 13021301121019. The next prime is 13021301121043. The reversal of 13021301121020 is 2012110312031.

It is a self number, because there is not a number n which added to its sum of digits gives 13021301121020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4365011 + ... + 6715349.

It is an arithmetic number, because the mean of its divisors is an integer number (571884728800).

Almost surely, 2^{13021301121020} is an apocalyptic number.

13021301121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13021301121020 is an abundant number, since it is smaller than the sum of its proper divisors (14429165861380).

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

13021301121020 is a wasteful number, since it uses less digits than its factorization.

13021301121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351418 (or 2351416 counting only the distinct ones).

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

Adding to 13021301121020 its reverse (2012110312031), we get a palindrome (15033411433051).

The spelling of 13021301121020 in words is "thirteen trillion, twenty-one billion, three hundred one million, one hundred twenty-one thousand, twenty".