12113112012 has 96 divisors (see below), whose sum is σ = 29990822400. Its totient is φ = 3797494272.

The previous prime is 12113111977. The next prime is 12113112023. The reversal of 12113112012 is 21021131121.

It is a super-3 number, since 3×12113112012³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12113111982 and 12113112000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4120039 + ... + 4122977.

It is an arithmetic number, because the mean of its divisors is an integer number (312404400).

Almost surely, 2^12113112012 is an apocalyptic number.

12113112012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12113112012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14995411200).

12113112012 is an abundant number, since it is smaller than the sum of its proper divisors (17877710388).

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

12113112012 is a wasteful number, since it uses less digits than its factorization.

12113112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215 (or 3213 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12113112012 its reverse (21021131121), we get a palindrome (33134243133).

The spelling of 12113112012 in words is "twelve billion, one hundred thirteen million, one hundred twelve thousand, twelve".