199012 has 12 divisors (see below), whose sum is σ = 380016. Its totient is φ = 90440.

The previous prime is 198997. The next prime is 199021. The reversal of 199012 is 210991.

It is a super-2 number, since 2×199012² = 79211552288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an Ulam number.

It is an unprimeable number.

199012 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 3 ways as a sum of consecutive naturals, for example, 2218 + ... + 2305.

It is an arithmetic number, because the mean of its divisors is an integer number (31668).

2¹⁹⁹⁰¹² is an apocalyptic number.

It is an amenable number.

199012 is a deficient number, since it is larger than the sum of its proper divisors (181004).

199012 is a wasteful number, since it uses less digits than its factorization.

199012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538 (or 4536 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 199012 is about 446.1076103363. The cubic root of 199012 is about 58.3838981067.

It can be divided in two parts, 1990 and 12, that added together give a palindrome (2002).

The spelling of 199012 in words is "one hundred ninety-nine thousand, twelve".