199999101 has 8 divisors (see below), whose sum is σ = 282351744. Its totient is φ = 125489600.

The previous prime is 199999091. The next prime is 199999103. The reversal of 199999101 is 101999991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199999101 - 2¹¹ = 199997053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199999103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1960725 + ... + 1960826.

It is an arithmetic number, because the mean of its divisors is an integer number (35293968).

Almost surely, 2^199999101 is an apocalyptic number.

It is an amenable number.

199999101 is a deficient number, since it is larger than the sum of its proper divisors (82352643).

199999101 is a wasteful number, since it uses less digits than its factorization.

199999101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3921571.

The product of its (nonzero) digits is 59049, while the sum is 48.

The square root of 199999101 is about 14142.1038392454. The cubic root of 199999101 is about 584.8026714106.

The spelling of 199999101 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred one".