12012100112 has 20 divisors (see below), whose sum is σ = 23277804396. Its totient is φ = 6004924800.

The previous prime is 12012100033. The next prime is 12012100117. The reversal of 12012100112 is 21100121021.

It can be written as a sum of positive squares in 2 ways, for example, as 5224976656 + 6787123456 = 72284^2 + 82384^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12012100093 and 12012100102.

It is not an unprimeable number, because it can be changed into a prime (12012100117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21362 + ... + 156462.

Almost surely, 2^12012100112 is an apocalyptic number.

It is an amenable number.

12012100112 is a deficient number, since it is larger than the sum of its proper divisors (11265704284).

12012100112 is a wasteful number, since it uses less digits than its factorization.

12012100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140666 (or 140660 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12012100112 its reverse (21100121021), we get a palindrome (33112221133).

The spelling of 12012100112 in words is "twelve billion, twelve million, one hundred thousand, one hundred twelve".