13223020020 has 144 divisors (see below), whose sum is σ = 43023786624. Its totient is φ = 2972505600.

The previous prime is 13223020009. The next prime is 13223020039. The reversal of 13223020020 is 2002032231.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1558590 + ... + 1567050.

It is an arithmetic number, because the mean of its divisors is an integer number (298776296).

Almost surely, 2^13223020020 is an apocalyptic number.

13223020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13223020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21511893312).

13223020020 is an abundant number, since it is smaller than the sum of its proper divisors (29800766604).

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

13223020020 is a wasteful number, since it uses less digits than its factorization.

13223020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8602 (or 8539 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 13223020020 its reverse (2002032231), we get a palindrome (15225052251).

The spelling of 13223020020 in words is "thirteen billion, two hundred twenty-three million, twenty thousand, twenty".