131222311222201 has 2 divisors, whose sum is σ = 131222311222202. Its totient is φ = 131222311222200.

The previous prime is 131222311222127. The next prime is 131222311222213. The reversal of 131222311222201 is 102222113222131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92802780896400 + 38419530325801 = 9633420^2 + 6198349^2 .

It is a cyclic number.

It is not a de Polignac number, because 131222311222201 - 2¹¹ = 131222311220153 is a prime.

It is not a weakly prime, because it can be changed into another prime (131222311222291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65611155611100 + 65611155611101.

It is an arithmetic number, because the mean of its divisors is an integer number (65611155611101).

Almost surely, 2^{131222311222201} is an apocalyptic number.

It is an amenable number.

131222311222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

131222311222201 is an equidigital number, since it uses as much as digits as its factorization.

131222311222201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 131222311222201 its reverse (102222113222131), we get a palindrome (233444424444332).

The spelling of 131222311222201 in words is "one hundred thirty-one trillion, two hundred twenty-two billion, three hundred eleven million, two hundred twenty-two thousand, two hundred one".