12113103212 has 36 divisors (see below), whose sum is σ = 25956657720. Its totient is φ = 4918100544.

The previous prime is 12113103169. The next prime is 12113103217. The reversal of 12113103212 is 21230131121.

It is not an unprimeable number, because it can be changed into a prime (12113103217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1622633 + ... + 1630080.

It is an arithmetic number, because the mean of its divisors is an integer number (721018270).

Almost surely, 2^12113103212 is an apocalyptic number.

It is an amenable number.

12113103212 is an abundant number, since it is smaller than the sum of its proper divisors (13843554508).

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

12113103212 is a wasteful number, since it uses less digits than its factorization.

12113103212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252750 (or 3252741 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12113103212 its reverse (21230131121), we get a palindrome (33343234333).

The spelling of 12113103212 in words is "twelve billion, one hundred thirteen million, one hundred three thousand, two hundred twelve".