213011012209 has 2 divisors, whose sum is σ = 213011012210. Its totient is φ = 213011012208.

The previous prime is 213011012173. The next prime is 213011012237. The reversal of 213011012209 is 902210110312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212794922209 + 216090000 = 461297^2 + 14700^2 .

It is a cyclic number.

It is not a de Polignac number, because 213011012209 - 2²³ = 213002623601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213011012209.

It is not a weakly prime, because it can be changed into another prime (213011012239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106505506104 + 106505506105.

It is an arithmetic number, because the mean of its divisors is an integer number (106505506105).

Almost surely, 2^213011012209 is an apocalyptic number.

It is an amenable number.

213011012209 is a deficient number, since it is larger than the sum of its proper divisors (1).

213011012209 is an equidigital number, since it uses as much as digits as its factorization.

213011012209 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 22.

The spelling of 213011012209 in words is "two hundred thirteen billion, eleven million, twelve thousand, two hundred nine".