2112423012 has 72 divisors (see below), whose sum is σ = 6120296000. Its totient is φ = 601795008.

The previous prime is 2112423011. The next prime is 2112423013. The reversal of 2112423012 is 2103242112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2112423011) and next prime (2112423013).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2112423011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75939 + ... + 99957.

Almost surely, 2^2112423012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112423012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3060148000).

2112423012 is an abundant number, since it is smaller than the sum of its proper divisors (4007872988).

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

2112423012 is a wasteful number, since it uses less digits than its factorization.

2112423012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24385 (or 24380 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2112423012 is about 45961.1032504660. The cubic root of 2112423012 is about 1283.0993844564.

Adding to 2112423012 its reverse (2103242112), we get a palindrome (4215665124).

Subtracting from 2112423012 its reverse (2103242112), we obtain a square (9180900 = 3030²).

The spelling of 2112423012 in words is "two billion, one hundred twelve million, four hundred twenty-three thousand, twelve".