201220020211009 has 2 divisors, whose sum is σ = 201220020211010. Its totient is φ = 201220020211008.

The previous prime is 201220020210997. The next prime is 201220020211039. The reversal of 201220020211009 is 900112020022102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143594613711409 + 57625406499600 = 11983097^2 + 7591140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201220020211009 is a prime.

It is not a weakly prime, because it can be changed into another prime (201220020211039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610010105504 + 100610010105505.

It is an arithmetic number, because the mean of its divisors is an integer number (100610010105505).

Almost surely, 2^{201220020211009} is an apocalyptic number.

It is an amenable number.

201220020211009 is a deficient number, since it is larger than the sum of its proper divisors (1).

201220020211009 is an equidigital number, since it uses as much as digits as its factorization.

201220020211009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 201220020211009 in words is "two hundred one trillion, two hundred twenty billion, twenty million, two hundred eleven thousand, nine".