111131012330081 has 2 divisors, whose sum is σ = 111131012330082. Its totient is φ = 111131012330080.

The previous prime is 111131012330053. The next prime is 111131012330111. The reversal of 111131012330081 is 180033210131111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103485676729681 + 7645335600400 = 10172791^2 + 2765020^2 .

It is a cyclic number.

It is not a de Polignac number, because 111131012330081 - 2²⁶ = 111130945221217 is a prime.

It is a super-2 number, since 2×111131012330081² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111131012330081.

It is not a weakly prime, because it can be changed into another prime (111131012330011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55565506165040 + 55565506165041.

It is an arithmetic number, because the mean of its divisors is an integer number (55565506165041).

Almost surely, 2^{111131012330081} is an apocalyptic number.

It is an amenable number.

111131012330081 is a deficient number, since it is larger than the sum of its proper divisors (1).

111131012330081 is an equidigital number, since it uses as much as digits as its factorization.

111131012330081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

Adding to 111131012330081 its reverse (180033210131111), we get a palindrome (291164222461192).

The spelling of 111131012330081 in words is "one hundred eleven trillion, one hundred thirty-one billion, twelve million, three hundred thirty thousand, eighty-one".