131211122111177 has 2 divisors, whose sum is σ = 131211122111178. Its totient is φ = 131211122111176.

The previous prime is 131211122111149. The next prime is 131211122111213. The reversal of 131211122111177 is 771111221112131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75188651557321 + 56022470553856 = 8671139^2 + 7484816^2 .

It is a cyclic number.

It is not a de Polignac number, because 131211122111177 - 2⁴⁴ = 113618936066761 is a prime.

It is not a weakly prime, because it can be changed into another prime (131211122111077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65605561055588 + 65605561055589.

It is an arithmetic number, because the mean of its divisors is an integer number (65605561055589).

Almost surely, 2^{131211122111177} is an apocalyptic number.

It is an amenable number.

131211122111177 is a deficient number, since it is larger than the sum of its proper divisors (1).

131211122111177 is an equidigital number, since it uses as much as digits as its factorization.

131211122111177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1176, while the sum is 32.

The spelling of 131211122111177 in words is "one hundred thirty-one trillion, two hundred eleven billion, one hundred twenty-two million, one hundred eleven thousand, one hundred seventy-seven".