131201130321421 has 2 divisors, whose sum is σ = 131201130321422. Its totient is φ = 131201130321420.

The previous prime is 131201130321403. The next prime is 131201130321487. The reversal of 131201130321421 is 124123031102131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128210011956196 + 2991118365225 = 11322986^2 + 1729485^2 .

It is a cyclic number.

It is not a de Polignac number, because 131201130321421 - 2³¹ = 131198982837773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131201130321721) 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, 65600565160710 + 65600565160711.

It is an arithmetic number, because the mean of its divisors is an integer number (65600565160711).

Almost surely, 2^{131201130321421} is an apocalyptic number.

It is an amenable number.

131201130321421 is a deficient number, since it is larger than the sum of its proper divisors (1).

131201130321421 is an equidigital number, since it uses as much as digits as its factorization.

131201130321421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 131201130321421 its reverse (124123031102131), we get a palindrome (255324161423552).

The spelling of 131201130321421 in words is "one hundred thirty-one trillion, two hundred one billion, one hundred thirty million, three hundred twenty-one thousand, four hundred twenty-one".