111320031217 has 2 divisors, whose sum is σ = 111320031218. Its totient is φ = 111320031216.

The previous prime is 111320031203. The next prime is 111320031239. The reversal of 111320031217 is 712130023111.

It is an a-pointer prime, because the next prime (111320031239) can be obtained adding 111320031217 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66213067761 + 45106963456 = 257319^2 + 212384^2 .

It is a cyclic number.

It is not a de Polignac number, because 111320031217 - 2⁷ = 111320031089 is a prime.

It is not a weakly prime, because it can be changed into another prime (111320031287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55660015608 + 55660015609.

It is an arithmetic number, because the mean of its divisors is an integer number (55660015609).

Almost surely, 2^111320031217 is an apocalyptic number.

It is an amenable number.

111320031217 is a deficient number, since it is larger than the sum of its proper divisors (1).

111320031217 is an equidigital number, since it uses as much as digits as its factorization.

111320031217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

Adding to 111320031217 its reverse (712130023111), we get a palindrome (823450054328).

The spelling of 111320031217 in words is "one hundred eleven billion, three hundred twenty million, thirty-one thousand, two hundred seventeen".