13221122012 has 12 divisors (see below), whose sum is σ = 26442244080. Its totient is φ = 5666195136.

The previous prime is 13221122009. The next prime is 13221122023. The reversal of 13221122012 is 21022112231.

13221122012 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236091437 + ... + 236091492.

It is an arithmetic number, because the mean of its divisors is an integer number (2203520340).

Almost surely, 2^13221122012 is an apocalyptic number.

It is an amenable number.

13221122012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13221122012 is a wasteful number, since it uses less digits than its factorization.

13221122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472182940 (or 472182938 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 13221122012 its reverse (21022112231), we get a palindrome (34243234243).

The spelling of 13221122012 in words is "thirteen billion, two hundred twenty-one million, one hundred twenty-two thousand, twelve".