12001221022 has 48 divisors (see below), whose sum is σ = 21921269760. Its totient is φ = 4907271600.

The previous prime is 12001221019. The next prime is 12001221031. The reversal of 12001221022 is 22012210021.

It is a happy number.

12001221022 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 = 12001220993 and 12001221011.

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 23 ways as a sum of consecutive naturals, for example, 187879 + ... + 243517.

It is an arithmetic number, because the mean of its divisors is an integer number (456693120).

Almost surely, 2^12001221022 is an apocalyptic number.

12001221022 is a deficient number, since it is larger than the sum of its proper divisors (9920048738).

12001221022 is a wasteful number, since it uses less digits than its factorization.

12001221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55757 (or 55750 counting only the distinct ones).

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

Adding to 12001221022 its reverse (22012210021), we get a palindrome (34013431043).

The spelling of 12001221022 in words is "twelve billion, one million, two hundred twenty-one thousand, twenty-two".