12103012312 has 64 divisors (see below), whose sum is σ = 24698419200. Its totient is φ = 5539000320.

The previous prime is 12103012307. The next prime is 12103012381. The reversal of 12103012312 is 21321030121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3499288 + ... + 3502744.

It is an arithmetic number, because the mean of its divisors is an integer number (385912800).

Almost surely, 2^12103012312 is an apocalyptic number.

It is an amenable number.

12103012312 is an abundant number, since it is smaller than the sum of its proper divisors (12595406888).

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

12103012312 is a wasteful number, since it uses less digits than its factorization.

12103012312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4256 (or 4252 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12103012312 its reverse (21321030121), we get a palindrome (33424042433).

The spelling of 12103012312 in words is "twelve billion, one hundred three million, twelve thousand, three hundred twelve".