12103213144 has 16 divisors (see below), whose sum is σ = 24756572520. Its totient is φ = 5501460480.

The previous prime is 12103213141. The next prime is 12103213147. The reversal of 12103213144 is 44131230121.

It is an interprime number because it is at equal distance from previous prime (12103213141) and next prime (12103213147).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103213141) 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 in 3 ways as a sum of consecutive naturals, for example, 68768169 + ... + 68768344.

Almost surely, 2^12103213144 is an apocalyptic number.

It is an amenable number.

12103213144 is an abundant number, since it is smaller than the sum of its proper divisors (12653359376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12103213144 is a wasteful number, since it uses less digits than its factorization.

12103213144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137536530 (or 137536526 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12103213144 its reverse (44131230121), we get a palindrome (56234443265).

The spelling of 12103213144 in words is "twelve billion, one hundred three million, two hundred thirteen thousand, one hundred forty-four".