201019201 has 2 divisors, whose sum is σ = 201019202. Its totient is φ = 201019200.

The previous prime is 201019199. The next prime is 201019207. The reversal of 201019201 is 102910102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120450625 + 80568576 = 10975^2 + 8976^2 .

It is a cyclic number.

It is not a de Polignac number, because 201019201 - 2¹ = 201019199 is a prime.

Together with 201019199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (201019207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100509600 + 100509601.

It is an arithmetic number, because the mean of its divisors is an integer number (100509601).

Almost surely, 2^201019201 is an apocalyptic number.

It is an amenable number.

201019201 is a deficient number, since it is larger than the sum of its proper divisors (1).

201019201 is an equidigital number, since it uses as much as digits as its factorization.

201019201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 201019201 is about 14178.1240296451. The cubic root of 201019201 is about 585.7952522358.

Adding to 201019201 its reverse (102910102), we get a palindrome (303929303).

The spelling of 201019201 in words is "two hundred one million, nineteen thousand, two hundred one".