12212221001222 has 16 divisors (see below), whose sum is σ = 20360684072592. Its totient is φ = 5446273516320.

The previous prime is 12212221001179. The next prime is 12212221001273. The reversal of 12212221001222 is 22210012221221.

It is a junction number, because it is equal to n+sod(n) for n = 12212221001194 and 12212221001203.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5236800293 + ... + 5236802624.

It is an arithmetic number, because the mean of its divisors is an integer number (1272542754537).

Almost surely, 2^{12212221001222} is an apocalyptic number.

12212221001222 is a deficient number, since it is larger than the sum of its proper divisors (8148463071370).

12212221001222 is a wasteful number, since it uses less digits than its factorization.

12212221001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10473602983.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12212221001222 its reverse (22210012221221), we get a palindrome (34422233222443).

The spelling of 12212221001222 in words is "twelve trillion, two hundred twelve billion, two hundred twenty-one million, one thousand, two hundred twenty-two".