13221242312 has 32 divisors (see below), whose sum is σ = 26344984320. Its totient is φ = 6198785280.

The previous prime is 13221242311. The next prime is 13221242341. The reversal of 13221242312 is 21324212231.

It is not an unprimeable number, because it can be changed into a prime (13221242311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142508 + ... + 216219.

It is an arithmetic number, because the mean of its divisors is an integer number (823280760).

Almost surely, 2^13221242312 is an apocalyptic number.

It is an amenable number.

13221242312 is a deficient number, since it is larger than the sum of its proper divisors (13123742008).

13221242312 is a wasteful number, since it uses less digits than its factorization.

13221242312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359021 (or 359017 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

Adding to 13221242312 its reverse (21324212231), we get a palindrome (34545454543).

The spelling of 13221242312 in words is "thirteen billion, two hundred twenty-one million, two hundred forty-two thousand, three hundred twelve".