13021323020 has 48 divisors (see below), whose sum is σ = 27922200768. Its totient is φ = 5098978560.

The previous prime is 13021322983. The next prime is 13021323041. The reversal of 13021323020 is 2032312031.

It is a super-3 number, since 3×13021323020³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13021323020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475337 + ... + 501983.

It is an arithmetic number, because the mean of its divisors is an integer number (581712516).

Almost surely, 2^13021323020 is an apocalyptic number.

13021323020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13021323020 is an abundant number, since it is smaller than the sum of its proper divisors (14900877748).

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

13021323020 is a wasteful number, since it uses less digits than its factorization.

13021323020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27170 (or 27168 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 13021323020 its reverse (2032312031), we get a palindrome (15053635051).

The spelling of 13021323020 in words is "thirteen billion, twenty-one million, three hundred twenty-three thousand, twenty".