12103422144 has 112 divisors (see below), whose sum is σ = 35055901440. Its totient is φ = 3654999040.

The previous prime is 12103422143. The next prime is 12103422157. The reversal of 12103422144 is 44122430121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (12103422143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609037 + ... + 628595.

It is an arithmetic number, because the mean of its divisors is an integer number (312999120).

Almost surely, 2^12103422144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12103422144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17527950720).

12103422144 is an abundant number, since it is smaller than the sum of its proper divisors (22952479296).

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

12103422144 is a wasteful number, since it uses less digits than its factorization.

12103422144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19878 (or 19868 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 12103422144 its reverse (44122430121), we get a palindrome (56225852265).

The spelling of 12103422144 in words is "twelve billion, one hundred three million, four hundred twenty-two thousand, one hundred forty-four".