12023021112 has 64 divisors (see below), whose sum is σ = 31939207200. Its totient is φ = 3758469120.

The previous prime is 12023021107. The next prime is 12023021123. The reversal of 12023021112 is 21112032021.

It is a junction number, because it is equal to n+sod(n) for n = 12023021091 and 12023021100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62214 + ... + 167082.

Almost surely, 2^12023021112 is an apocalyptic number.

12023021112 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 12023021112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15969603600).

12023021112 is an abundant number, since it is smaller than the sum of its proper divisors (19916186088).

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

12023021112 is a wasteful number, since it uses less digits than its factorization.

12023021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105176 (or 105172 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12023021112 its reverse (21112032021), we get a palindrome (33135053133).

The spelling of 12023021112 in words is "twelve billion, twenty-three million, twenty-one thousand, one hundred twelve".