12181106 has 12 divisors (see below), whose sum is σ = 21254958. Its totient is φ = 5220432.

The previous prime is 12181087. The next prime is 12181111. The reversal of 12181106 is 60118121.

It can be written as a sum of positive squares in only one way, i.e., 10504081 + 1677025 = 3241^2 + 1295^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62051 + ... + 62246.

Almost surely, 2^12181106 is an apocalyptic number.

12181106 is a deficient number, since it is larger than the sum of its proper divisors (9073852).

12181106 is a wasteful number, since it uses less digits than its factorization.

12181106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124313 (or 124306 counting only the distinct ones).

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

The square root of 12181106 is about 3490.1441230986. The cubic root of 12181106 is about 230.0888503603.

Adding to 12181106 its reverse (60118121), we get a palindrome (72299227).

The spelling of 12181106 in words is "twelve million, one hundred eighty-one thousand, one hundred six".