12221036144 has 10 divisors (see below), whose sum is σ = 23678257560. Its totient is φ = 6110518064.

The previous prime is 12221036129. The next prime is 12221036159. The reversal of 12221036144 is 44163012221.

12221036144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12221036129) and next prime (12221036159).

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 as a sum of consecutive naturals, namely, 381907364 + ... + 381907395.

It is an arithmetic number, because the mean of its divisors is an integer number (2367825756).

Almost surely, 2^12221036144 is an apocalyptic number.

It is an amenable number.

12221036144 is a deficient number, since it is larger than the sum of its proper divisors (11457221416).

12221036144 is an equidigital number, since it uses as much as digits as its factorization.

12221036144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763814767 (or 763814761 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 12221036144 its reverse (44163012221), we get a palindrome (56384048365).

The spelling of 12221036144 in words is "twelve billion, two hundred twenty-one million, thirty-six thousand, one hundred forty-four".