111111101110489 has 2 divisors, whose sum is σ = 111111101110490. Its totient is φ = 111111101110488.

The previous prime is 111111101110469. The next prime is 111111101110549. The reversal of 111111101110489 is 984011101111111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98435507432089 + 12675593678400 = 9921467^2 + 3560280^2 .

It is a cyclic number.

It is not a de Polignac number, because 111111101110489 - 2⁹ = 111111101109977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111111101110489.

It is not a weakly prime, because it can be changed into another prime (111111101110469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555550555244 + 55555550555245.

It is an arithmetic number, because the mean of its divisors is an integer number (55555550555245).

Almost surely, 2^{111111101110489} is an apocalyptic number.

It is an amenable number.

111111101110489 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111101110489 is an equidigital number, since it uses as much as digits as its factorization.

111111101110489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 31.

The spelling of 111111101110489 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred one million, one hundred ten thousand, four hundred eighty-nine".