12103213112 has 16 divisors (see below), whose sum is σ = 22695873840. Its totient is φ = 6050980096.

The previous prime is 12103213081. The next prime is 12103213127. The reversal of 12103213112 is 21131230121.

It is a congruent number.

It is an unprimeable number.

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, 9608 + ... + 155880.

It is an arithmetic number, because the mean of its divisors is an integer number (1418492115).

Almost surely, 2^12103213112 is an apocalyptic number.

It is an amenable number.

12103213112 is a deficient number, since it is larger than the sum of its proper divisors (10592660728).

12103213112 is a wasteful number, since it uses less digits than its factorization.

12103213112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156622 (or 156618 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12103213112 its reverse (21131230121), we get a palindrome (33234443233).

The spelling of 12103213112 in words is "twelve billion, one hundred three million, two hundred thirteen thousand, one hundred twelve".