12100111112 has 16 divisors (see below), whose sum is σ = 22705328700. Its totient is φ = 6045356800.

The previous prime is 12100111057. The next prime is 12100111129. The reversal of 12100111112 is 21111100121.

It can be written as a sum of positive squares in 2 ways, for example, as 9857709796 + 2242401316 = 99286^2 + 47354^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12100111093 and 12100111102.

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, 576389 + ... + 597012.

Almost surely, 2^12100111112 is an apocalyptic number.

It is an amenable number.

12100111112 is a deficient number, since it is larger than the sum of its proper divisors (10605217588).

12100111112 is a wasteful number, since it uses less digits than its factorization.

12100111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174696 (or 1174692 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12100111112 its reverse (21111100121), we get a palindrome (33211211233).

The spelling of 12100111112 in words is "twelve billion, one hundred million, one hundred eleven thousand, one hundred twelve".