201520201 has 4 divisors (see below), whose sum is σ = 201560832. Its totient is φ = 201479572.

The previous prime is 201520199. The next prime is 201520219. The reversal of 201520201 is 102025102.

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 201520201 - 2¹ = 201520199 is a prime.

It is a super-2 number, since 2×201520201² = 81220782822160802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201520001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11641 + ... + 23206.

It is an arithmetic number, because the mean of its divisors is an integer number (50390208).

Almost surely, 2^201520201 is an apocalyptic number.

It is an amenable number.

201520201 is a deficient number, since it is larger than the sum of its proper divisors (40631).

201520201 is an equidigital number, since it uses as much as digits as its factorization.

201520201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40630.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 201520201 is about 14195.7810986222. The cubic root of 201520201 is about 586.2815075136.

Adding to 201520201 its reverse (102025102), we get a palindrome (303545303).

The spelling of 201520201 in words is "two hundred one million, five hundred twenty thousand, two hundred one".