201020211089 has 2 divisors, whose sum is σ = 201020211090. Its totient is φ = 201020211088.

The previous prime is 201020211079. The next prime is 201020211103. The reversal of 201020211089 is 980112020102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103963039489 + 97057171600 = 322433^2 + 311540^2 .

It is a cyclic number.

It is not a de Polignac number, because 201020211089 - 2¹² = 201020206993 is a prime.

It is a super-2 number, since 2×201020211089² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201020211079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510105544 + 100510105545.

It is an arithmetic number, because the mean of its divisors is an integer number (100510105545).

Almost surely, 2^201020211089 is an apocalyptic number.

It is an amenable number.

201020211089 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020211089 is an equidigital number, since it uses as much as digits as its factorization.

201020211089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 201020211089 in words is "two hundred one billion, twenty million, two hundred eleven thousand, eighty-nine".