205112601 has 16 divisors (see below), whose sum is σ = 304091200. Its totient is φ = 136642464.

The previous prime is 205112569. The next prime is 205112617. The reversal of 205112601 is 106211502.

205112601 is a `hidden beast` number, since 2 + 0 + 51 + 12 + 601 = 666.

It is not a de Polignac number, because 205112601 - 2⁵ = 205112569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205112801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70365 + ... + 73221.

It is an arithmetic number, because the mean of its divisors is an integer number (19005700).

Almost surely, 2^205112601 is an apocalyptic number.

It is an amenable number.

205112601 is a deficient number, since it is larger than the sum of its proper divisors (98978599).

205112601 is a wasteful number, since it uses less digits than its factorization.

205112601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5525 (or 5519 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 205112601 is about 14321.7527209486. The cubic root of 205112601 is about 589.7447914719.

The spelling of 205112601 in words is "two hundred five million, one hundred twelve thousand, six hundred one".