13521225313231 has 2 divisors, whose sum is σ = 13521225313232. Its totient is φ = 13521225313230.

The previous prime is 13521225313217. The next prime is 13521225313237. The reversal of 13521225313231 is 13231352212531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13521225313231 - 2¹⁵ = 13521225280463 is a prime.

It is a super-2 number, since 2×13521225313231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13521225313237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760612656615 + 6760612656616.

It is an arithmetic number, because the mean of its divisors is an integer number (6760612656616).

Almost surely, 2^{13521225313231} is an apocalyptic number.

13521225313231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13521225313231 is an equidigital number, since it uses as much as digits as its factorization.

13521225313231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 34.

Adding to 13521225313231 its reverse (13231352212531), we get a palindrome (26752577525762).

The spelling of 13521225313231 in words is "thirteen trillion, five hundred twenty-one billion, two hundred twenty-five million, three hundred thirteen thousand, two hundred thirty-one".