12001110222222 has 64 divisors (see below), whose sum is σ = 29113220747520. Its totient is φ = 3634247541600.

The previous prime is 12001110222197. The next prime is 12001110222229. The reversal of 12001110222222 is 22222201110021.

It is a happy number.

12001110222222 is a `hidden beast` number, since 1 + 200 + 11 + 10 + 222 + 222 = 666.

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 = 12001110222195 and 12001110222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001110222229) 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, 5930929 + ... + 7692732.

It is an arithmetic number, because the mean of its divisors is an integer number (454894074180).

Almost surely, 2^{12001110222222} is an apocalyptic number.

12001110222222 is an abundant number, since it is smaller than the sum of its proper divisors (17112110525298).

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

12001110222222 is a wasteful number, since it uses less digits than its factorization.

12001110222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13625166 (or 13625160 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12001110222222 its reverse (22222201110021), we get a palindrome (34223311332243).

The spelling of 12001110222222 in words is "twelve trillion, one billion, one hundred ten million, two hundred twenty-two thousand, two hundred twenty-two".