12113556 has 48 divisors (see below), whose sum is σ = 34790784. Its totient is φ = 3194496.

The previous prime is 12113539. The next prime is 12113557. The reversal of 12113556 is 65531121.

12113556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4455 + ... + 6638.

It is an arithmetic number, because the mean of its divisors is an integer number (724808).

Almost surely, 2^12113556 is an apocalyptic number.

It is an amenable number.

12113556 is an abundant number, since it is smaller than the sum of its proper divisors (22677228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12113556 is a wasteful number, since it uses less digits than its factorization.

12113556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11120 (or 11118 counting only the distinct ones).

The product of its digits is 900, while the sum is 24.

The square root of 12113556 is about 3480.4534187373. The cubic root of 12113556 is about 229.6627445299.

Adding to 12113556 its reverse (65531121), we get a palindrome (77644677).

The spelling of 12113556 in words is "twelve million, one hundred thirteen thousand, five hundred fifty-six".