2130212009 has 2 divisors, whose sum is σ = 2130212010. Its totient is φ = 2130212008.

The previous prime is 2130211997. The next prime is 2130212039. The reversal of 2130212009 is 9002120312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1443772009 + 686440000 = 37997^2 + 26200^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130212009 - 2²⁰ = 2129163433 is a prime.

It is not a weakly prime, because it can be changed into another prime (2130212039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065106004 + 1065106005.

It is an arithmetic number, because the mean of its divisors is an integer number (1065106005).

Almost surely, 2^2130212009 is an apocalyptic number.

It is an amenable number.

2130212009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130212009 is an equidigital number, since it uses as much as digits as its factorization.

2130212009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2130212009 is about 46154.2198395770. The cubic root of 2130212009 is about 1286.6910385446.

The spelling of 2130212009 in words is "two billion, one hundred thirty million, two hundred twelve thousand, nine".