12001122022222 has 4 divisors (see below), whose sum is σ = 18001683033336. Its totient is φ = 6000561011110.

The previous prime is 12001122022217. The next prime is 12001122022237. The reversal of 12001122022222 is 22222022110021.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12001122022222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3000280505554 + ... + 3000280505557.

It is an arithmetic number, because the mean of its divisors is an integer number (4500420758334).

Almost surely, 2^{12001122022222} is an apocalyptic number.

12001122022222 is a deficient number, since it is larger than the sum of its proper divisors (6000561011114).

12001122022222 is an equidigital number, since it uses as much as digits as its factorization.

12001122022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6000561011113.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12001122022222 its reverse (22222022110021), we get a palindrome (34223144132243).

The spelling of 12001122022222 in words is "twelve trillion, one billion, one hundred twenty-two million, twenty-two thousand, two hundred twenty-two".