208043121 has 32 divisors (see below), whose sum is σ = 327720960. Its totient is φ = 115732800.

The previous prime is 208043063. The next prime is 208043183. The reversal of 208043121 is 121340802.

It is not a de Polignac number, because 208043121 - 2¹¹ = 208041073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208043191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80670 + ... + 83208.

It is an arithmetic number, because the mean of its divisors is an integer number (10241280).

Almost surely, 2^208043121 is an apocalyptic number.

It is an amenable number.

208043121 is a deficient number, since it is larger than the sum of its proper divisors (119677839).

208043121 is a wasteful number, since it uses less digits than its factorization.

208043121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 208043121 is about 14423.6999760810. The cubic root of 208043121 is about 592.5401550168.

Adding to 208043121 its reverse (121340802), we get a palindrome (329383923).

The spelling of 208043121 in words is "two hundred eight million, forty-three thousand, one hundred twenty-one".