208601121 has 8 divisors (see below), whose sum is σ = 278352864. Its totient is φ = 138958400.

The previous prime is 208601111. The next prime is 208601123. The reversal of 208601121 is 121106802.

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 208601121 - 2¹⁰ = 208600097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208601123) 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, 22680 + ... + 30521.

It is an arithmetic number, because the mean of its divisors is an integer number (34794108).

Almost surely, 2^208601121 is an apocalyptic number.

It is an amenable number.

208601121 is a deficient number, since it is larger than the sum of its proper divisors (69751743).

208601121 is a wasteful number, since it uses less digits than its factorization.

208601121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54511.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 208601121 is about 14443.0301876026. The cubic root of 208601121 is about 593.0694399069.

Adding to 208601121 its reverse (121106802), we get a palindrome (329707923).

The spelling of 208601121 in words is "two hundred eight million, six hundred one thousand, one hundred twenty-one".