13001443220 has 24 divisors (see below), whose sum is σ = 28490120064. Its totient is φ = 4974465056.

The previous prime is 13001443201. The next prime is 13001443267. The reversal of 13001443220 is 2234410031.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13001443192 and 13001443201.

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, 14131544 + ... + 14132463.

It is an arithmetic number, because the mean of its divisors is an integer number (1187088336).

Almost surely, 2^13001443220 is an apocalyptic number.

13001443220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13001443220 is an abundant number, since it is smaller than the sum of its proper divisors (15488676844).

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

13001443220 is a wasteful number, since it uses less digits than its factorization.

13001443220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28264039 (or 28264037 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 13001443220 its reverse (2234410031), we get a palindrome (15235853251).

The spelling of 13001443220 in words is "thirteen billion, one million, four hundred forty-three thousand, two hundred twenty".