201202009 has 2 divisors, whose sum is σ = 201202010. Its totient is φ = 201202008.

The previous prime is 201202003. The next prime is 201202013. The reversal of 201202009 is 900202102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185041609 + 16160400 = 13603^2 + 4020^2 .

It is a cyclic number.

It is not a de Polignac number, because 201202009 - 2¹¹ = 201199961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201201983 and 201202001.

It is not a weakly prime, because it can be changed into another prime (201202003) 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, 100601004 + 100601005.

It is an arithmetic number, because the mean of its divisors is an integer number (100601005).

Almost surely, 2^201202009 is an apocalyptic number.

It is an amenable number.

201202009 is a deficient number, since it is larger than the sum of its proper divisors (1).

201202009 is an equidigital number, since it uses as much as digits as its factorization.

201202009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 201202009 is about 14184.5693977646. The cubic root of 201202009 is about 585.9727736072.

The spelling of 201202009 in words is "two hundred one million, two hundred two thousand, nine".