2020211009 has 2 divisors, whose sum is σ = 2020211010. Its totient is φ = 2020211008.

The previous prime is 2020210961. The next prime is 2020211023. The reversal of 2020211009 is 9001120202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2019154225 + 1056784 = 44935^2 + 1028^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020211009 - 2²⁴ = 2003433793 is a prime.

It is not a weakly prime, because it can be changed into another prime (2020211059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010105504 + 1010105505.

It is an arithmetic number, because the mean of its divisors is an integer number (1010105505).

Almost surely, 2^2020211009 is an apocalyptic number.

It is an amenable number.

2020211009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020211009 is an equidigital number, since it uses as much as digits as its factorization.

2020211009 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 square root of 2020211009 is about 44946.7574915032. The cubic root of 2020211009 is about 1264.1508794900.

The spelling of 2020211009 in words is "two billion, twenty million, two hundred eleven thousand, nine".