12210222209 has 2 divisors, whose sum is σ = 12210222210. Its totient is φ = 12210222208.

The previous prime is 12210222191. The next prime is 12210222217. The reversal of 12210222209 is 90222201221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11684529025 + 525693184 = 108095^2 + 22928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12210222209 is a prime.

It is not a weakly prime, because it can be changed into another prime (12210227209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105111104 + 6105111105.

It is an arithmetic number, because the mean of its divisors is an integer number (6105111105).

Almost surely, 2^12210222209 is an apocalyptic number.

It is an amenable number.

12210222209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210222209 is an equidigital number, since it uses as much as digits as its factorization.

12210222209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 12210222209 in words is "twelve billion, two hundred ten million, two hundred twenty-two thousand, two hundred nine".