12011222012222 has 16 divisors (see below), whose sum is σ = 18034273192320. Its totient is φ = 5999797924632.

The previous prime is 12011222012221. The next prime is 12011222012303. The reversal of 12011222012222 is 22221022211021.

It is a junction number, because it is equal to n+sod(n) for n = 12011222012194 and 12011222012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011222012221) by changing a digit.

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, 128659253 + ... + 128752575.

It is an arithmetic number, because the mean of its divisors is an integer number (1127142074520).

Almost surely, 2^{12011222012222} is an apocalyptic number.

12011222012222 is a deficient number, since it is larger than the sum of its proper divisors (6023051180098).

12011222012222 is a wasteful number, since it uses less digits than its factorization.

12011222012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154927.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12011222012222 its reverse (22221022211021), we get a palindrome (34232244223243).

The spelling of 12011222012222 in words is "twelve trillion, eleven billion, two hundred twenty-two million, twelve thousand, two hundred twenty-two".