199211712 has 112 divisors (see below), whose sum is σ = 637885440. Its totient is φ = 53563392.

The previous prime is 199211711. The next prime is 199211723. The reversal of 199211712 is 217112991.

199211712 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-3 number, since 3×199211712³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (199211711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18489 + ... + 27207.

Almost surely, 2^199211712 is an apocalyptic number.

199211712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199211712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318942720).

199211712 is an abundant number, since it is smaller than the sum of its proper divisors (438673728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199211712 is a wasteful number, since it uses less digits than its factorization.

199211712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8758 (or 8748 counting only the distinct ones).

The product of its digits is 2268, while the sum is 33.

The square root of 199211712 is about 14114.2379177907. The cubic root of 199211712 is about 584.0342132955.

The spelling of 199211712 in words is "one hundred ninety-nine million, two hundred eleven thousand, seven hundred twelve".