111212330312077 has 2 divisors, whose sum is σ = 111212330312078. Its totient is φ = 111212330312076.

The previous prime is 111212330312033. The next prime is 111212330312141. The reversal of 111212330312077 is 770213033212111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110359836342441 + 852493969636 = 10505229^2 + 923306^2 .

It is an emirp because it is prime and its reverse (770213033212111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111212330312077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111212330312977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606165156038 + 55606165156039.

It is an arithmetic number, because the mean of its divisors is an integer number (55606165156039).

Almost surely, 2^{111212330312077} is an apocalyptic number.

It is an amenable number.

111212330312077 is a deficient number, since it is larger than the sum of its proper divisors (1).

111212330312077 is an equidigital number, since it uses as much as digits as its factorization.

111212330312077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

Adding to 111212330312077 its reverse (770213033212111), we get a palindrome (881425363524188).

The spelling of 111212330312077 in words is "one hundred eleven trillion, two hundred twelve billion, three hundred thirty million, three hundred twelve thousand, seventy-seven".