13221336700 has 144 divisors (see below), whose sum is σ = 33788149920. Its totient is φ = 4427136000.

The previous prime is 13221336683. The next prime is 13221336701. The reversal of 13221336700 is 763312231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221336701) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7735446 + ... + 7737154.

It is an arithmetic number, because the mean of its divisors is an integer number (234639930).

Almost surely, 2^13221336700 is an apocalyptic number.

13221336700 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 13221336700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16894074960).

13221336700 is an abundant number, since it is smaller than the sum of its proper divisors (20566813220).

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

13221336700 is a wasteful number, since it uses less digits than its factorization.

13221336700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288 (or 2281 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

Adding to 13221336700 its reverse (763312231), we get a palindrome (13984648931).

The spelling of 13221336700 in words is "thirteen billion, two hundred twenty-one million, three hundred thirty-six thousand, seven hundred".