199121833 has 8 divisors (see below), whose sum is σ = 220002048. Its totient is φ = 179260224.

The previous prime is 199121821. The next prime is 199121851. The reversal of 199121833 is 338121991.

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 199121833 - 2¹³ = 199113641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199121792 and 199121801.

It is not an unprimeable number, because it can be changed into a prime (199121033) 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, 254241 + ... + 255022.

It is an arithmetic number, because the mean of its divisors is an integer number (27500256).

Almost surely, 2^199121833 is an apocalyptic number.

It is an amenable number.

199121833 is a deficient number, since it is larger than the sum of its proper divisors (20880215).

199121833 is a wasteful number, since it uses less digits than its factorization.

199121833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509303.

The product of its digits is 11664, while the sum is 37.

The square root of 199121833 is about 14111.0535751233. The cubic root of 199121833 is about 583.9463665404.

The spelling of 199121833 in words is "one hundred ninety-nine million, one hundred twenty-one thousand, eight hundred thirty-three".