12503305112 has 32 divisors (see below), whose sum is σ = 24884748720. Its totient is φ = 5869209600.

The previous prime is 12503305109. The next prime is 12503305123. The reversal of 12503305112 is 21150330521.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60098 + ... + 169169.

Almost surely, 2^12503305112 is an apocalyptic number.

It is an amenable number.

12503305112 is a deficient number, since it is larger than the sum of its proper divisors (12381443608).

12503305112 is a wasteful number, since it uses less digits than its factorization.

12503305112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229691 (or 229687 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 12503305112 its reverse (21150330521), we get a palindrome (33653635633).

The spelling of 12503305112 in words is "twelve billion, five hundred three million, three hundred five thousand, one hundred twelve".