111331102489 has 2 divisors, whose sum is σ = 111331102490. Its totient is φ = 111331102488.

The previous prime is 111331102453. The next prime is 111331102643. The reversal of 111331102489 is 984201133111.

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., 97146292489 + 14184810000 = 311683^2 + 119100^2 .

It is a cyclic number.

It is not a de Polignac number, because 111331102489 - 2¹⁵ = 111331069721 is a prime.

It is a super-2 number, since 2×111331102489² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111331102429) 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, 55665551244 + 55665551245.

It is an arithmetic number, because the mean of its divisors is an integer number (55665551245).

Almost surely, 2^111331102489 is an apocalyptic number.

It is an amenable number.

111331102489 is a deficient number, since it is larger than the sum of its proper divisors (1).

111331102489 is an equidigital number, since it uses as much as digits as its factorization.

111331102489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 111331102489 in words is "one hundred eleven billion, three hundred thirty-one million, one hundred two thousand, four hundred eighty-nine".