1222422213209 has 4 divisors (see below), whose sum is σ = 1250850636816. Its totient is φ = 1193993789604.

The previous prime is 1222422213191. The next prime is 1222422213293. The reversal of 1222422213209 is 9023122242221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222422213209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222422233209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14214211739 + ... + 14214211824.

It is an arithmetic number, because the mean of its divisors is an integer number (312712659204).

Almost surely, 2^{1222422213209} is an apocalyptic number.

It is an amenable number.

1222422213209 is a deficient number, since it is larger than the sum of its proper divisors (28428423607).

1222422213209 is an equidigital number, since it uses as much as digits as its factorization.

1222422213209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28428423606.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 1222422213209 in words is "one trillion, two hundred twenty-two billion, four hundred twenty-two million, two hundred thirteen thousand, two hundred nine".