Search a number
-
+
201020201 is a prime number
BaseRepresentation
bin10111111101101…
…01001100101001
3112000020212212122
423332311030221
5402430121301
631540321025
74660433504
oct1376651451
9460225778
10201020201
11a351a4a8
12573a3175
1332853785
141c9aa13b
15129ab81b
hexbfb5329

201020201 has 2 divisors, whose sum is σ = 201020202. Its totient is φ = 201020200.

The previous prime is 201020191. The next prime is 201020233. The reversal of 201020201 is 102020102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170328601 + 30691600 = 13051^2 + 5540^2 .

It is a cyclic number.

It is not a de Polignac number, because 201020201 - 218 = 200758057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201020251) 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, 100510100 + 100510101.

It is an arithmetic number, because the mean of its divisors is an integer number (100510101).

Almost surely, 2201020201 is an apocalyptic number.

It is an amenable number.

201020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020201 is an equidigital number, since it uses as much as digits as its factorization.

201020201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 201020201 is about 14178.1592951977. The cubic root of 201020201 is about 585.7962236095.

Adding to 201020201 its reverse (102020102), we get a palindrome (303040303).

Subtracting from 201020201 its reverse (102020102), we obtain a palindrome (99000099).

The spelling of 201020201 in words is "two hundred one million, twenty thousand, two hundred one".