12000021222 has 16 divisors (see below), whose sum is σ = 27428620032. Its totient is φ = 3428577480.

The previous prime is 12000021181. The next prime is 12000021233. The reversal of 12000021222 is 22212000021.

12000021222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12000021198 and 12000021207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142857354 + ... + 142857437.

It is an arithmetic number, because the mean of its divisors is an integer number (1714288752).

Almost surely, 2^12000021222 is an apocalyptic number.

12000021222 is an abundant number, since it is smaller than the sum of its proper divisors (15428598810).

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

12000021222 is a wasteful number, since it uses less digits than its factorization.

12000021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285714803.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12000021222 its reverse (22212000021), we get a palindrome (34212021243).

It can be divided in two parts, 12000021 and 222, that multiplied together give a palindrome (2664004662).

The spelling of 12000021222 in words is "twelve billion, twenty-one thousand, two hundred twenty-two".