12222212221222 has 16 divisors (see below), whose sum is σ = 18931696671744. Its totient is φ = 5911792101000.

The previous prime is 12222212221133. The next prime is 12222212221327. The reversal of 12222212221222 is 22212221222221.

12222212221222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36189804 + ... + 36525967.

It is an arithmetic number, because the mean of its divisors is an integer number (1183231041984).

Almost surely, 2^{12222212221222} is an apocalyptic number.

12222212221222 is a deficient number, since it is larger than the sum of its proper divisors (6709484450522).

12222212221222 is a wasteful number, since it uses less digits than its factorization.

12222212221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72718515.

The product of its digits is 2048, while the sum is 25.

Adding to 12222212221222 its reverse (22212221222221), we get a palindrome (34434433443443).

Subtracting 12222212221222 from its reverse (22212221222221), we obtain a palindrome (9990009000999).

It can be divided in two parts, 1222221 and 2221222, that added together give a palindrome (3443443).

The spelling of 12222212221222 in words is "twelve trillion, two hundred twenty-two billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twenty-two".