12117772 has 12 divisors (see below), whose sum is σ = 21554176. Its totient is φ = 5959440.

The previous prime is 12117733. The next prime is 12117779. The reversal of 12117772 is 27771121.

12117772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12117772.

It is not an unprimeable number, because it can be changed into a prime (12117779) 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, 24588 + ... + 25075.

Almost surely, 2^12117772 is an apocalyptic number.

It is an amenable number.

12117772 is a deficient number, since it is larger than the sum of its proper divisors (9436404).

12117772 is a wasteful number, since it uses less digits than its factorization.

12117772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49728 (or 49726 counting only the distinct ones).

The product of its digits is 1372, while the sum is 28.

The square root of 12117772 is about 3481.0590342595. The cubic root of 12117772 is about 229.6893853672.

Adding to 12117772 its reverse (27771121), we get a palindrome (39888893).

The spelling of 12117772 in words is "twelve million, one hundred seventeen thousand, seven hundred seventy-two".