12211111011222 has 64 divisors (see below), whose sum is σ = 27189911520000. Its totient is φ = 4062258938304.

The previous prime is 12211111011221. The next prime is 12211111011241. The reversal of 12211111011222 is 22211011111221.

It is a happy number.

It is a super-2 number, since 2×12211111011222² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12211111011195 and 12211111011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211111011221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90149098 + ... + 90284450.

It is an arithmetic number, because the mean of its divisors is an integer number (424842367500).

Almost surely, 2^{12211111011222} is an apocalyptic number.

12211111011222 is an abundant number, since it is smaller than the sum of its proper divisors (14978800508778).

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

12211111011222 is a wasteful number, since it uses less digits than its factorization.

12211111011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138682 (or 138676 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12211111011222 its reverse (22211011111221), we get a palindrome (34422122122443).

Subtracting 12211111011222 from its reverse (22211011111221), we obtain a palindrome (9999900099999).

The spelling of 12211111011222 in words is "twelve trillion, two hundred eleven billion, one hundred eleven million, eleven thousand, two hundred twenty-two".