12212209343466 has 480 divisors, whose sum is σ = 33096807152640. Its totient is φ = 3347879040000.

The previous prime is 12212209343443. The next prime is 12212209343489. The reversal of 12212209343466 is 66434390221221.

12212209343466 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 2 + 209 + 3 + 434 + 6 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (12212209343443) and next prime (12212209343489).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 1559864440 + ... + 1559872268.

It is an arithmetic number, because the mean of its divisors is an integer number (68951681568).

Almost surely, 2^{12212209343466} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12212209343466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16548403576320).

12212209343466 is an abundant number, since it is smaller than the sum of its proper divisors (20884597809174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12212209343466 is a wasteful number, since it uses less digits than its factorization.

12212209343466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8064 (or 8044 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

Adding to 12212209343466 its reverse (66434390221221), we get a palindrome (78646599564687).

The spelling of 12212209343466 in words is "twelve trillion, two hundred twelve billion, two hundred nine million, three hundred forty-three thousand, four hundred sixty-six".