12212102209 has 2 divisors, whose sum is σ = 12212102210. Its totient is φ = 12212102208.

The previous prime is 12212102179. The next prime is 12212102233. The reversal of 12212102209 is 90220121221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8691459984 + 3520642225 = 93228^2 + 59335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212102209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12212102209.

It is not a weakly prime, because it can be changed into another prime (12212102509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106051104 + 6106051105.

It is an arithmetic number, because the mean of its divisors is an integer number (6106051105).

Almost surely, 2^12212102209 is an apocalyptic number.

It is an amenable number.

12212102209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212102209 is an equidigital number, since it uses as much as digits as its factorization.

12212102209 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 22.

The spelling of 12212102209 in words is "twelve billion, two hundred twelve million, one hundred two thousand, two hundred nine".