13112213232221 has 16 divisors (see below), whose sum is σ = 13423141818240. Its totient is φ = 12801558772800.

The previous prime is 13112213232203. The next prime is 13112213232389. The reversal of 13112213232221 is 12223231221131.

It is a cyclic number.

It is not a de Polignac number, because 13112213232221 - 2¹⁰ = 13112213231197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13112213232421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1854885875 + ... + 1854892943.

It is an arithmetic number, because the mean of its divisors is an integer number (838946363640).

Almost surely, 2^{13112213232221} is an apocalyptic number.

It is an amenable number.

13112213232221 is a deficient number, since it is larger than the sum of its proper divisors (310928586019).

13112213232221 is an equidigital number, since it uses as much as digits as its factorization.

13112213232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20276.

The product of its digits is 1728, while the sum is 26.

Adding to 13112213232221 its reverse (12223231221131), we get a palindrome (25335444453352).

The spelling of 13112213232221 in words is "thirteen trillion, one hundred twelve billion, two hundred thirteen million, two hundred thirty-two thousand, two hundred twenty-one".