12117102112 has 24 divisors (see below), whose sum is σ = 23954545692. Its totient is φ = 6033408000.

The previous prime is 12117102097. The next prime is 12117102113. The reversal of 12117102112 is 21120171121.

It can be written as a sum of positive squares in 2 ways, for example, as 12109681936 + 7420176 = 110044^2 + 2724^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12117102112.

It is not an unprimeable number, because it can be changed into a prime (12117102113) 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, 777889 + ... + 793312.

Almost surely, 2^12117102112 is an apocalyptic number.

It is an amenable number.

12117102112 is a deficient number, since it is larger than the sum of its proper divisors (11837443580).

12117102112 is a wasteful number, since it uses less digits than its factorization.

12117102112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571452 (or 1571444 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 12117102112 its reverse (21120171121), we get a palindrome (33237273233).

The spelling of 12117102112 in words is "twelve billion, one hundred seventeen million, one hundred two thousand, one hundred twelve".