12012221122 has 8 divisors (see below), whose sum is σ = 19656361872. Its totient is φ = 5460100500.

The previous prime is 12012221119. The next prime is 12012221129. The reversal of 12012221122 is 22112221021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12012221096 and 12012221105.

It is not an unprimeable number, because it can be changed into a prime (12012221129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273005004 + ... + 273005047.

It is an arithmetic number, because the mean of its divisors is an integer number (2457045234).

Almost surely, 2^12012221122 is an apocalyptic number.

12012221122 is a deficient number, since it is larger than the sum of its proper divisors (7644140750).

12012221122 is a wasteful number, since it uses less digits than its factorization.

12012221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546010064.

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

Adding to 12012221122 its reverse (22112221021), we get a palindrome (34124442143).

The spelling of 12012221122 in words is "twelve billion, twelve million, two hundred twenty-one thousand, one hundred twenty-two".