131344424514221 has 2 divisors, whose sum is σ = 131344424514222. Its totient is φ = 131344424514220.

The previous prime is 131344424514139. The next prime is 131344424514253. The reversal of 131344424514221 is 122415424443131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88099136020996 + 43245288493225 = 9386114^2 + 6576115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131344424514221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131344424514521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65672212257110 + 65672212257111.

It is an arithmetic number, because the mean of its divisors is an integer number (65672212257111).

Almost surely, 2^{131344424514221} is an apocalyptic number.

It is an amenable number.

131344424514221 is a deficient number, since it is larger than the sum of its proper divisors (1).

131344424514221 is an equidigital number, since it uses as much as digits as its factorization.

131344424514221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 368640, while the sum is 41.

Adding to 131344424514221 its reverse (122415424443131), we get a palindrome (253759848957352).

The spelling of 131344424514221 in words is "one hundred thirty-one trillion, three hundred forty-four billion, four hundred twenty-four million, five hundred fourteen thousand, two hundred twenty-one".