111111109002857 has 2 divisors, whose sum is σ = 111111109002858. Its totient is φ = 111111109002856.

The previous prime is 111111109002853. The next prime is 111111109003033. The reversal of 111111109002857 is 758200901111111.

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., 110245569044521 + 865539958336 = 10499789^2 + 930344^2 .

It is a cyclic number.

It is not a de Polignac number, because 111111109002857 - 2² = 111111109002853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111111109002857.

It is not a weakly prime, because it can be changed into another prime (111111109002853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555554501428 + 55555554501429.

It is an arithmetic number, because the mean of its divisors is an integer number (55555554501429).

Almost surely, 2^{111111109002857} is an apocalyptic number.

It is an amenable number.

111111109002857 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111109002857 is an equidigital number, since it uses as much as digits as its factorization.

111111109002857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 38.

The spelling of 111111109002857 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred nine million, two thousand, eight hundred fifty-seven".