12221102121022 has 16 divisors (see below), whose sum is σ = 19043125531200. Its totient is φ = 5875156863520.

The previous prime is 12221102121017. The next prime is 12221102121047. The reversal of 12221102121022 is 22012120112221.

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 7 ways as a sum of consecutive naturals, for example, 440799229 + ... + 440826952.

It is an arithmetic number, because the mean of its divisors is an integer number (1190195345700).

Almost surely, 2^{12221102121022} is an apocalyptic number.

12221102121022 is a deficient number, since it is larger than the sum of its proper divisors (6822023410178).

12221102121022 is a wasteful number, since it uses less digits than its factorization.

12221102121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881626451.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12221102121022 its reverse (22012120112221), we get a palindrome (34233222233243).

The spelling of 12221102121022 in words is "twelve trillion, two hundred twenty-one billion, one hundred two million, one hundred twenty-one thousand, twenty-two".