212002002209 has 2 divisors, whose sum is σ = 212002002210. Its totient is φ = 212002002208.

The previous prime is 212002002193. The next prime is 212002002217. The reversal of 212002002209 is 902200200212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122258619025 + 89743383184 = 349655^2 + 299572^2 .

It is a cyclic number.

It is not a de Polignac number, because 212002002209 - 2⁴ = 212002002193 is a prime.

It is not a weakly prime, because it can be changed into another prime (212002005209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106001001104 + 106001001105.

It is an arithmetic number, because the mean of its divisors is an integer number (106001001105).

Almost surely, 2^212002002209 is an apocalyptic number.

It is an amenable number.

212002002209 is a deficient number, since it is larger than the sum of its proper divisors (1).

212002002209 is an equidigital number, since it uses as much as digits as its factorization.

212002002209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 212002002209 in words is "two hundred twelve billion, two million, two thousand, two hundred nine".