12102212221222 has 16 divisors (see below), whose sum is σ = 18361968660720. Its totient is φ = 5981590671232.

The previous prime is 12102212221217. The next prime is 12102212221339. The reversal of 12102212221222 is 22212221220121.

It is a junction number, because it is equal to n+sod(n) for n = 12102212221193 and 12102212221202.

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, 7967263 + ... + 9363850.

It is an arithmetic number, because the mean of its divisors is an integer number (1147623041295).

Almost surely, 2^{12102212221222} is an apocalyptic number.

12102212221222 is a deficient number, since it is larger than the sum of its proper divisors (6259756439498).

12102212221222 is a wasteful number, since it uses less digits than its factorization.

12102212221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17335127.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12102212221222 its reverse (22212221220121), we get a palindrome (34314433441343).

The spelling of 12102212221222 in words is "twelve trillion, one hundred two billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twenty-two".