111224851897 has 2 divisors, whose sum is σ = 111224851898. Its totient is φ = 111224851896.

The previous prime is 111224851891. The next prime is 111224851937. The reversal of 111224851897 is 798158422111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93227019561 + 17997832336 = 305331^2 + 134156^2 .

It is a cyclic number.

It is not a de Polignac number, because 111224851897 - 2¹⁹ = 111224327609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111224851897.

It is not a weakly prime, because it can be changed into another prime (111224851891) 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, 55612425948 + 55612425949.

It is an arithmetic number, because the mean of its divisors is an integer number (55612425949).

Almost surely, 2^111224851897 is an apocalyptic number.

It is an amenable number.

111224851897 is a deficient number, since it is larger than the sum of its proper divisors (1).

111224851897 is an equidigital number, since it uses as much as digits as its factorization.

111224851897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 49.

The spelling of 111224851897 in words is "one hundred eleven billion, two hundred twenty-four million, eight hundred fifty-one thousand, eight hundred ninety-seven".