12221002012 has 12 divisors (see below), whose sum is σ = 21657472480. Its totient is φ = 6033152736.

The previous prime is 12221001997. The next prime is 12221002021. The reversal of 12221002012 is 21020012221.

It is a happy number.

12221002012 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 = 12221001983 and 12221002001.

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 3 ways as a sum of consecutive naturals, for example, 19336713 + ... + 19337344.

Almost surely, 2^12221002012 is an apocalyptic number.

It is an amenable number.

12221002012 is a deficient number, since it is larger than the sum of its proper divisors (9436470468).

12221002012 is a wasteful number, since it uses less digits than its factorization.

12221002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38674140 (or 38674138 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12221002012 its reverse (21020012221), we get a palindrome (33241014233).

The spelling of 12221002012 in words is "twelve billion, two hundred twenty-one million, two thousand, twelve".