12211122111222 has 16 divisors (see below), whose sum is σ = 24430222777392. Its totient is φ = 4069044277920.

The previous prime is 12211122111197. The next prime is 12211122111241. The reversal of 12211122111222 is 22211122111221.

It is a super-2 number, since 2×12211122111222² (a number of 27 digits) contains 22 as substring.

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 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, 332419893 + ... + 332456624.

It is an arithmetic number, because the mean of its divisors is an integer number (1526888923587).

Almost surely, 2^{12211122111222} is an apocalyptic number.

12211122111222 is an abundant number, since it is smaller than the sum of its proper divisors (12219100666170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12211122111222 is a wasteful number, since it uses less digits than its factorization.

12211122111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664879583.

The product of its digits is 128, while the sum is 21.

Adding to 12211122111222 its reverse (22211122111221), we get a palindrome (34422244222443).

Subtracting 12211122111222 from its reverse (22211122111221), we obtain a palindrome (9999999999999).

The spelling of 12211122111222 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twenty-two".