12212112211222 has 64 divisors (see below), whose sum is σ = 22907458990080. Its totient is φ = 4743550836000.

The previous prime is 12212112211217. The next prime is 12212112211279. The reversal of 12212112211222 is 22211221121221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12212112211193 and 12212112211202.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 246053173 + ... + 246102799.

It is an arithmetic number, because the mean of its divisors is an integer number (357929046720).

Almost surely, 2^{12212112211222} is an apocalyptic number.

12212112211222 is a deficient number, since it is larger than the sum of its proper divisors (10695346778858).

12212112211222 is a wasteful number, since it uses less digits than its factorization.

12212112211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54457.

The product of its digits is 256, while the sum is 22.

Adding to 12212112211222 its reverse (22211221121221), we get a palindrome (34423333332443).

The spelling of 12212112211222 in words is "twelve trillion, two hundred twelve billion, one hundred twelve million, two hundred eleven thousand, two hundred twenty-two".