13221134421044 has 12 divisors (see below), whose sum is σ = 25240347531168. Its totient is φ = 6009606555000.

The previous prime is 13221134420993. The next prime is 13221134421149. The reversal of 13221134421044 is 44012443112231.

It is a self number, because there is not a number n which added to its sum of digits gives 13221134421044.

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, 150240163832 + ... + 150240163919.

It is an arithmetic number, because the mean of its divisors is an integer number (2103362294264).

Almost surely, 2^{13221134421044} is an apocalyptic number.

It is an amenable number.

13221134421044 is a deficient number, since it is larger than the sum of its proper divisors (12019213110124).

13221134421044 is a wasteful number, since it uses less digits than its factorization.

13221134421044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300480327766 (or 300480327764 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 13221134421044 its reverse (44012443112231), we get a palindrome (57233577533275).

The spelling of 13221134421044 in words is "thirteen trillion, two hundred twenty-one billion, one hundred thirty-four million, four hundred twenty-one thousand, forty-four".