12103105344 has 84 divisors (see below), whose sum is σ = 35198681952. Its totient is φ = 3667600640.

The previous prime is 12103105309. The next prime is 12103105349. The reversal of 12103105344 is 44350130121.

It is a happy number.

It is a super-2 number, since 2×12103105344² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103105349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237252 + ... + 283715.

It is an arithmetic number, because the mean of its divisors is an integer number (419031928).

Almost surely, 2^12103105344 is an apocalyptic number.

It is an amenable number.

12103105344 is an abundant number, since it is smaller than the sum of its proper divisors (23095576608).

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

12103105344 is a wasteful number, since it uses less digits than its factorization.

12103105344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521004 (or 520983 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 12103105344 its reverse (44350130121), we get a palindrome (56453235465).

The spelling of 12103105344 in words is "twelve billion, one hundred three million, one hundred five thousand, three hundred forty-four".