111122199889 has 2 divisors, whose sum is σ = 111122199890. Its totient is φ = 111122199888.

The previous prime is 111122199869. The next prime is 111122200019. The reversal of 111122199889 is 988991221111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86917063489 + 24205136400 = 294817^2 + 155580^2 .

It is a cyclic number.

It is not a de Polignac number, because 111122199889 - 2⁵ = 111122199857 is a prime.

It is a super-2 number, since 2×111122199889² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111122199869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561099944 + 55561099945.

It is an arithmetic number, because the mean of its divisors is an integer number (55561099945).

Almost surely, 2^111122199889 is an apocalyptic number.

It is an amenable number.

111122199889 is a deficient number, since it is larger than the sum of its proper divisors (1).

111122199889 is an equidigital number, since it uses as much as digits as its factorization.

111122199889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 52.

The spelling of 111122199889 in words is "one hundred eleven billion, one hundred twenty-two million, one hundred ninety-nine thousand, eight hundred eighty-nine".