12421022444 has 12 divisors (see below), whose sum is σ = 21793545984. Its totient is φ = 6194295024.

The previous prime is 12421022429. The next prime is 12421022479. The reversal of 12421022444 is 44422012421.

It is a happy number.

12421022444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4052327 + ... + 4055390.

It is an arithmetic number, because the mean of its divisors is an integer number (1816128832).

Almost surely, 2^12421022444 is an apocalyptic number.

It is an amenable number.

12421022444 is a deficient number, since it is larger than the sum of its proper divisors (9372523540).

12421022444 is a wasteful number, since it uses less digits than its factorization.

12421022444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8108104 (or 8108102 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 12421022444 its reverse (44422012421), we get a palindrome (56843034865).

The spelling of 12421022444 in words is "twelve billion, four hundred twenty-one million, twenty-two thousand, four hundred forty-four".