12180116 has 48 divisors (see below), whose sum is σ = 24449040. Its totient is φ = 5268480.

The previous prime is 12180101. The next prime is 12180151. The reversal of 12180116 is 61108121.

It can be written as a sum of positive squares in 8 ways, for example, as 250000 + 11930116 = 500^2 + 3454^2 .

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 61730 + ... + 61926.

It is an arithmetic number, because the mean of its divisors is an integer number (509355).

Almost surely, 2^12180116 is an apocalyptic number.

It is an amenable number.

12180116 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

12180116 is a wasteful number, since it uses less digits than its factorization.

12180116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 12180116 is about 3490.0022922629. The cubic root of 12180116 is about 230.0826168230.

Adding to 12180116 its reverse (61108121), we get a palindrome (73288237).

It can be divided in two parts, 121801 and 16, that multiplied together give a square (1948816 = 1396²).

The spelling of 12180116 in words is "twelve million, one hundred eighty thousand, one hundred sixteen".