199999200101 has 4 divisors (see below), whose sum is σ = 200005111104. Its totient is φ = 199993289100.

The previous prime is 199999200083. The next prime is 199999200169. The reversal of 199999200101 is 101002999991.

199999200101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199999200101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199999200101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199999202101) 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 in 3 ways as a sum of consecutive naturals, for example, 2904455 + ... + 2972516.

It is an arithmetic number, because the mean of its divisors is an integer number (50001277776).

Almost surely, 2^199999200101 is an apocalyptic number.

It is an amenable number.

199999200101 is a deficient number, since it is larger than the sum of its proper divisors (5911003).

199999200101 is an equidigital number, since it uses as much as digits as its factorization.

199999200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911002.

The product of its (nonzero) digits is 118098, while the sum is 50.

The spelling of 199999200101 in words is "one hundred ninety-nine billion, nine hundred ninety-nine million, two hundred thousand, one hundred one".