199121835 has 48 divisors (see below), whose sum is σ = 361589760. Its totient is φ = 93403200.

The previous prime is 199121821. The next prime is 199121851. The reversal of 199121835 is 538121991.

It is not a de Polignac number, because 199121835 - 2⁸ = 199121579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199121793 and 199121802.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 54496 + ... + 58034.

It is an arithmetic number, because the mean of its divisors is an integer number (7533120).

Almost surely, 2^199121835 is an apocalyptic number.

199121835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

199121835 is a deficient number, since it is larger than the sum of its proper divisors (162467925).

199121835 is a wasteful number, since it uses less digits than its factorization.

199121835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600 (or 3589 counting only the distinct ones).

The product of its digits is 19440, while the sum is 39.

The square root of 199121835 is about 14111.0536459897. The cubic root of 199121835 is about 583.9463684955.

The spelling of 199121835 in words is "one hundred ninety-nine million, one hundred twenty-one thousand, eight hundred thirty-five".