131201421020321 has 2 divisors, whose sum is σ = 131201421020322. Its totient is φ = 131201421020320.

The previous prime is 131201421020287. The next prime is 131201421020339. The reversal of 131201421020321 is 123020124102131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119703292810000 + 11498128210321 = 10940900^2 + 3390889^2 .

It is an emirp because it is prime and its reverse (123020124102131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131201421020321 - 2¹⁴ = 131201421003937 is a prime.

It is not a weakly prime, because it can be changed into another prime (131201421020521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65600710510160 + 65600710510161.

It is an arithmetic number, because the mean of its divisors is an integer number (65600710510161).

Almost surely, 2^{131201421020321} is an apocalyptic number.

It is an amenable number.

131201421020321 is a deficient number, since it is larger than the sum of its proper divisors (1).

131201421020321 is an equidigital number, since it uses as much as digits as its factorization.

131201421020321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 131201421020321 its reverse (123020124102131), we get a palindrome (254221545122452).

The spelling of 131201421020321 in words is "one hundred thirty-one trillion, two hundred one billion, four hundred twenty-one million, twenty thousand, three hundred twenty-one".