131201321131421 has 2 divisors, whose sum is σ = 131201321131422. Its totient is φ = 131201321131420.

The previous prime is 131201321131343. The next prime is 131201321131427. The reversal of 131201321131421 is 124131123102131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130023596978521 + 1177724152900 = 11402789^2 + 1085230^2 .

It is a cyclic number.

It is not a de Polignac number, because 131201321131421 - 2²⁶ = 131201254022557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131201321131427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65600660565710 + 65600660565711.

It is an arithmetic number, because the mean of its divisors is an integer number (65600660565711).

Almost surely, 2^{131201321131421} is an apocalyptic number.

It is an amenable number.

131201321131421 is a deficient number, since it is larger than the sum of its proper divisors (1).

131201321131421 is an equidigital number, since it uses as much as digits as its factorization.

131201321131421 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 26.

Adding to 131201321131421 its reverse (124131123102131), we get a palindrome (255332444233552).

The spelling of 131201321131421 in words is "one hundred thirty-one trillion, two hundred one billion, three hundred twenty-one million, one hundred thirty-one thousand, four hundred twenty-one".