12221332012 has 12 divisors (see below), whose sum is σ = 21645010296. Its totient is φ = 6037043360.

The previous prime is 12221332007. The next prime is 12221332021. The reversal of 12221332012 is 21023312221.

12221332012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12221332012² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 18405289 + ... + 18405952.

It is an arithmetic number, because the mean of its divisors is an integer number (1803750858).

Almost surely, 2^12221332012 is an apocalyptic number.

It is an amenable number.

12221332012 is a deficient number, since it is larger than the sum of its proper divisors (9423678284).

12221332012 is a wasteful number, since it uses less digits than its factorization.

12221332012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36811328 (or 36811326 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12221332012 its reverse (21023312221), we get a palindrome (33244644233).

The spelling of 12221332012 in words is "twelve billion, two hundred twenty-one million, three hundred thirty-two thousand, twelve".