131303122012121 has 2 divisors, whose sum is σ = 131303122012122. Its totient is φ = 131303122012120.

The previous prime is 131303122012093. The next prime is 131303122012171. The reversal of 131303122012121 is 121210221303131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131232718819225 + 70403192896 = 11455685^2 + 265336^2 .

It is a cyclic number.

It is not a de Polignac number, because 131303122012121 - 2⁶ = 131303122012057 is a prime.

It is not a weakly prime, because it can be changed into another prime (131303122012171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65651561006060 + 65651561006061.

It is an arithmetic number, because the mean of its divisors is an integer number (65651561006061).

Almost surely, 2^{131303122012121} is an apocalyptic number.

It is an amenable number.

131303122012121 is a deficient number, since it is larger than the sum of its proper divisors (1).

131303122012121 is an equidigital number, since it uses as much as digits as its factorization.

131303122012121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 131303122012121 its reverse (121210221303131), we get a palindrome (252513343315252).

The spelling of 131303122012121 in words is "one hundred thirty-one trillion, three hundred three billion, one hundred twenty-two million, twelve thousand, one hundred twenty-one".