111231130111177 has 2 divisors, whose sum is σ = 111231130111178. Its totient is φ = 111231130111176.

The previous prime is 111231130111163. The next prime is 111231130111253. The reversal of 111231130111177 is 771111031132111.

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., 102359435536656 + 8871694574521 = 10117284^2 + 2978539^2 .

It is a cyclic number.

It is not a de Polignac number, because 111231130111177 - 2²³ = 111231121722569 is a prime.

It is not a weakly prime, because it can be changed into another prime (111231130111477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55615565055588 + 55615565055589.

It is an arithmetic number, because the mean of its divisors is an integer number (55615565055589).

Almost surely, 2^{111231130111177} is an apocalyptic number.

It is an amenable number.

111231130111177 is a deficient number, since it is larger than the sum of its proper divisors (1).

111231130111177 is an equidigital number, since it uses as much as digits as its factorization.

111231130111177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 31.

Adding to 111231130111177 its reverse (771111031132111), we get a palindrome (882342161243288).

The spelling of 111231130111177 in words is "one hundred eleven trillion, two hundred thirty-one billion, one hundred thirty million, one hundred eleven thousand, one hundred seventy-seven".