201009201 has 4 divisors (see below), whose sum is σ = 268012272. Its totient is φ = 134006132.

The previous prime is 201009199. The next prime is 201009217. The reversal of 201009201 is 102900102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201009201 - 2¹ = 201009199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201009001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33501531 + ... + 33501536.

It is an arithmetic number, because the mean of its divisors is an integer number (67003068).

Almost surely, 2^201009201 is an apocalyptic number.

It is an amenable number.

201009201 is a deficient number, since it is larger than the sum of its proper divisors (67003071).

201009201 is an equidigital number, since it uses as much as digits as its factorization.

201009201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67003070.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 201009201 is about 14177.7713692950. The cubic root of 201009201 is about 585.7855383219.

Adding to 201009201 its reverse (102900102), we get a palindrome (303909303).

The spelling of 201009201 in words is "two hundred one million, nine thousand, two hundred one".