13221213340 has 48 divisors (see below), whose sum is σ = 27923837760. Its totient is φ = 5258234880.

The previous prime is 13221213329. The next prime is 13221213347. The reversal of 13221213340 is 4331212231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221213347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2690806 + ... + 2695714.

It is an arithmetic number, because the mean of its divisors is an integer number (581746620).

Almost surely, 2^13221213340 is an apocalyptic number.

13221213340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13221213340 is an abundant number, since it is smaller than the sum of its proper divisors (14702624420).

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

13221213340 is a wasteful number, since it uses less digits than its factorization.

13221213340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5662 (or 5660 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13221213340 its reverse (4331212231), we get a palindrome (17552425571).

The spelling of 13221213340 in words is "thirteen billion, two hundred twenty-one million, two hundred thirteen thousand, three hundred forty".