13220223312 has 20 divisors (see below), whose sum is σ = 34152243680. Its totient is φ = 4406741088.

The previous prime is 13220223307. The next prime is 13220223347. The reversal of 13220223312 is 21332202231.

It is a happy number.

13220223312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137710612 + ... + 137710707.

It is an arithmetic number, because the mean of its divisors is an integer number (1707612184).

Almost surely, 2^13220223312 is an apocalyptic number.

13220223312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13220223312 is an abundant number, since it is smaller than the sum of its proper divisors (20932020368).

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

13220223312 is a wasteful number, since it uses less digits than its factorization.

13220223312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275421330 (or 275421324 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13220223312 its reverse (21332202231), we get a palindrome (34552425543).

The spelling of 13220223312 in words is "thirteen billion, two hundred twenty million, two hundred twenty-three thousand, three hundred twelve".