200201101909 has 2 divisors, whose sum is σ = 200201101910. Its totient is φ = 200201101908.

The previous prime is 200201101889. The next prime is 200201101939. The reversal of 200201101909 is 909101102002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199136385009 + 1064716900 = 446247^2 + 32630^2 .

It is a cyclic number.

It is not a de Polignac number, because 200201101909 - 2⁷ = 200201101781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200201101939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100100550954 + 100100550955.

It is an arithmetic number, because the mean of its divisors is an integer number (100100550955).

Almost surely, 2^200201101909 is an apocalyptic number.

It is an amenable number.

200201101909 is a deficient number, since it is larger than the sum of its proper divisors (1).

200201101909 is an equidigital number, since it uses as much as digits as its factorization.

200201101909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 200201101909 in words is "two hundred billion, two hundred one million, one hundred one thousand, nine hundred nine".