12100001112 has 48 divisors (see below), whose sum is σ = 33010066440. Its totient is φ = 4003890048.

The previous prime is 12100001101. The next prime is 12100001129. The reversal of 12100001112 is 21110000121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12100001094 and 12100001103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 603478 + ... + 623205.

Almost surely, 2^12100001112 is an apocalyptic number.

12100001112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12100001112 is an abundant number, since it is smaller than the sum of its proper divisors (20910065328).

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

12100001112 is a wasteful number, since it uses less digits than its factorization.

12100001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226832 (or 1226825 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12100001112 its reverse (21110000121), we get a palindrome (33210001233).

Subtracting 12100001112 from its reverse (21110000121), we obtain a palindrome (9009999009).

The spelling of 12100001112 in words is "twelve billion, one hundred million, one thousand, one hundred twelve".