201001200209 has 2 divisors, whose sum is σ = 201001200210. Its totient is φ = 201001200208.

The previous prime is 201001200161. The next prime is 201001200263. The reversal of 201001200209 is 902002100102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156183040000 + 44818160209 = 395200^2 + 211703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201001200209 is a prime.

It is not a weakly prime, because it can be changed into another prime (201001200299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500600104 + 100500600105.

It is an arithmetic number, because the mean of its divisors is an integer number (100500600105).

Almost surely, 2^201001200209 is an apocalyptic number.

It is an amenable number.

201001200209 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001200209 is an equidigital number, since it uses as much as digits as its factorization.

201001200209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The spelling of 201001200209 in words is "two hundred one billion, one million, two hundred thousand, two hundred nine".