12212023211209 has 2 divisors, whose sum is σ = 12212023211210. Its totient is φ = 12212023211208.

The previous prime is 12212023211207. The next prime is 12212023211257. The reversal of 12212023211209 is 90211232021221.

12212023211209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10154878435584 + 2057144775625 = 3186672^2 + 1434275^2 .

It is an emirp because it is prime and its reverse (90211232021221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12212023211209 - 2¹ = 12212023211207 is a prime.

It is a super-2 number, since 2×12212023211209² (a number of 27 digits) contains 22 as substring.

Together with 12212023211207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12212023211207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106011605604 + 6106011605605.

It is an arithmetic number, because the mean of its divisors is an integer number (6106011605605).

Almost surely, 2^{12212023211209} is an apocalyptic number.

It is an amenable number.

12212023211209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212023211209 is an equidigital number, since it uses as much as digits as its factorization.

12212023211209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 12212023211209 in words is "twelve trillion, two hundred twelve billion, twenty-three million, two hundred eleven thousand, two hundred nine".