13021022220 has 24 divisors (see below), whose sum is σ = 36458862384. Its totient is φ = 3472272576.

The previous prime is 13021022213. The next prime is 13021022237. The reversal of 13021022220 is 2222012031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13021022220.

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, 108508459 + ... + 108508578.

It is an arithmetic number, because the mean of its divisors is an integer number (1519119266).

Almost surely, 2^13021022220 is an apocalyptic number.

13021022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13021022220 is an abundant number, since it is smaller than the sum of its proper divisors (23437840164).

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

13021022220 is a wasteful number, since it uses less digits than its factorization.

13021022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217017049 (or 217017047 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 13021022220 its reverse (2222012031), we get a palindrome (15243034251).

The spelling of 13021022220 in words is "thirteen billion, twenty-one million, twenty-two thousand, two hundred twenty".