12021444104 has 8 divisors (see below), whose sum is σ = 22540207710. Its totient is φ = 6010722048.

The previous prime is 12021444103. The next prime is 12021444143. The reversal of 12021444104 is 40144412021.

It can be written as a sum of positive squares in only one way, i.e., 10588821604 + 1432622500 = 102902^2 + 37850^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 12021444104.

It is not an unprimeable number, because it can be changed into a prime (12021444103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 751340249 + ... + 751340264.

Almost surely, 2^12021444104 is an apocalyptic number.

It is an amenable number.

12021444104 is a deficient number, since it is larger than the sum of its proper divisors (10518763606).

12021444104 is a wasteful number, since it uses less digits than its factorization.

12021444104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502680519 (or 1502680515 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 12021444104 its reverse (40144412021), we get a palindrome (52165856125).

The spelling of 12021444104 in words is "twelve billion, twenty-one million, four hundred forty-four thousand, one hundred four".