12129116 has 6 divisors (see below), whose sum is σ = 21225960. Its totient is φ = 6064556.

The previous prime is 12129113. The next prime is 12129127. The reversal of 12129116 is 61192121.

It is a happy number.

12129116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 12129091 and 12129100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12129113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1516136 + ... + 1516143.

It is an arithmetic number, because the mean of its divisors is an integer number (3537660).

Almost surely, 2^12129116 is an apocalyptic number.

It is an amenable number.

12129116 is a deficient number, since it is larger than the sum of its proper divisors (9096844).

12129116 is a wasteful number, since it uses less digits than its factorization.

12129116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032283 (or 3032281 counting only the distinct ones).

The product of its digits is 216, while the sum is 23.

The square root of 12129116 is about 3482.6880423030. The cubic root of 12129116 is about 229.7610372555.

The spelling of 12129116 in words is "twelve million, one hundred twenty-nine thousand, one hundred sixteen".