13302231111221 has 32 divisors (see below), whose sum is σ = 15246913717728. Its totient is φ = 11496696422400.

The previous prime is 13302231111203. The next prime is 13302231111229. The reversal of 13302231111221 is 12211113220331.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 1327136256196 + 11975094855025 = 1152014^2 + 3460505^2 .

It is a cyclic number.

It is not a de Polignac number, because 13302231111221 - 2¹⁰ = 13302231110197 is a prime.

It is a super-2 number, since 2×13302231111221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13302231111229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 657442121 + ... + 657462353.

It is an arithmetic number, because the mean of its divisors is an integer number (476466053679).

Almost surely, 2^{13302231111221} is an apocalyptic number.

It is an amenable number.

13302231111221 is a deficient number, since it is larger than the sum of its proper divisors (1944682606507).

13302231111221 is a wasteful number, since it uses less digits than its factorization.

13302231111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35561.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 13302231111221 its reverse (12211113220331), we get a palindrome (25513344331552).

The spelling of 13302231111221 in words is "thirteen trillion, three hundred two billion, two hundred thirty-one million, one hundred eleven thousand, two hundred twenty-one".