12012211222 has 32 divisors (see below), whose sum is σ = 19772812800. Its totient is φ = 5427828000.

The previous prime is 12012211199. The next prime is 12012211229. The reversal of 12012211222 is 22211221021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12012211196 and 12012211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012211229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3684229 + ... + 3687487.

It is an arithmetic number, because the mean of its divisors is an integer number (617900400).

Almost surely, 2^12012211222 is an apocalyptic number.

12012211222 is a deficient number, since it is larger than the sum of its proper divisors (7760601578).

12012211222 is a wasteful number, since it uses less digits than its factorization.

12012211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4212.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12012211222 its reverse (22211221021), we get a palindrome (34223432243).

The spelling of 12012211222 in words is "twelve billion, twelve million, two hundred eleven thousand, two hundred twenty-two".