111341243081 has 2 divisors, whose sum is σ = 111341243082. Its totient is φ = 111341243080.

The previous prime is 111341243051. The next prime is 111341243179. The reversal of 111341243081 is 180342143111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111315649600 + 25593481 = 333640^2 + 5059^2 .

It is a cyclic number.

It is not a de Polignac number, because 111341243081 - 2¹⁰ = 111341242057 is a prime.

It is a super-2 number, since 2×111341243081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111341243021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55670621540 + 55670621541.

It is an arithmetic number, because the mean of its divisors is an integer number (55670621541).

Almost surely, 2^111341243081 is an apocalyptic number.

It is an amenable number.

111341243081 is a deficient number, since it is larger than the sum of its proper divisors (1).

111341243081 is an equidigital number, since it uses as much as digits as its factorization.

111341243081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

Adding to 111341243081 its reverse (180342143111), we get a palindrome (291683386192).

The spelling of 111341243081 in words is "one hundred eleven billion, three hundred forty-one million, two hundred forty-three thousand, eighty-one".