131222132117 has 2 divisors, whose sum is σ = 131222132118. Its totient is φ = 131222132116.

The previous prime is 131222132081. The next prime is 131222132137. The reversal of 131222132117 is 711231222131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118676116036 + 12546016081 = 344494^2 + 112009^2 .

It is a cyclic number.

It is not a de Polignac number, because 131222132117 - 2¹⁰ = 131222131093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131222132137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65611066058 + 65611066059.

It is an arithmetic number, because the mean of its divisors is an integer number (65611066059).

Almost surely, 2^131222132117 is an apocalyptic number.

It is an amenable number.

131222132117 is a deficient number, since it is larger than the sum of its proper divisors (1).

131222132117 is an equidigital number, since it uses as much as digits as its factorization.

131222132117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 26.

Adding to 131222132117 its reverse (711231222131), we get a palindrome (842453354248).

The spelling of 131222132117 in words is "one hundred thirty-one billion, two hundred twenty-two million, one hundred thirty-two thousand, one hundred seventeen".