199112 has 8 divisors (see below), whose sum is σ = 373350. Its totient is φ = 99552.

The previous prime is 199109. The next prime is 199151. The reversal of 199112 is 211991.

It can be written as a sum of positive squares in only one way, i.e., 198916 + 196 = 446^2 + 14^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12437 + ... + 12452.

2¹⁹⁹¹¹² is an apocalyptic number.

It is an amenable number.

199112 is a deficient number, since it is larger than the sum of its proper divisors (174238).

199112 is a wasteful number, since it uses less digits than its factorization.

199112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24895 (or 24891 counting only the distinct ones).

The product of its digits is 162, while the sum is 23.

The square root of 199112 is about 446.2196768409. The cubic root of 199112 is about 58.3936754269.

The spelling of 199112 in words is "one hundred ninety-nine thousand, one hundred twelve".