12113121112 has 16 divisors (see below), whose sum is σ = 24048108360. Its totient is φ = 5700292224.

The previous prime is 12113121049. The next prime is 12113121121. The reversal of 12113121112 is 21112131121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44533398 + ... + 44533669.

Almost surely, 2^12113121112 is an apocalyptic number.

It is an amenable number.

12113121112 is a deficient number, since it is larger than the sum of its proper divisors (11934987248).

12113121112 is a wasteful number, since it uses less digits than its factorization.

12113121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89067090 (or 89067086 counting only the distinct ones).

The product of its digits is 24, while the sum is 16.

Adding to 12113121112 its reverse (21112131121), we get a palindrome (33225252233).

It can be divided in two parts, 12113 and 121112, that added together give a square (133225 = 365²).

The spelling of 12113121112 in words is "twelve billion, one hundred thirteen million, one hundred twenty-one thousand, one hundred twelve".