13213200020 has 96 divisors (see below), whose sum is σ = 31351017600. Its totient is φ = 4647849984.

The previous prime is 13213200019. The next prime is 13213200053. The reversal of 13213200020 is 2000231231.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13213199968 and 13213200004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 457571 + ... + 485589.

It is an arithmetic number, because the mean of its divisors is an integer number (326573100).

Almost surely, 2^13213200020 is an apocalyptic number.

13213200020 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 13213200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15675508800).

13213200020 is an abundant number, since it is smaller than the sum of its proper divisors (18137817580).

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

13213200020 is a wasteful number, since it uses less digits than its factorization.

13213200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28137 (or 28135 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 13213200020 its reverse (2000231231), we get a palindrome (15213431251).

The spelling of 13213200020 in words is "thirteen billion, two hundred thirteen million, two hundred thousand, twenty".