12001331112 has 16 divisors (see below), whose sum is σ = 30003327840. Its totient is φ = 4000443696.

The previous prime is 12001331107. The next prime is 12001331117. The reversal of 12001331112 is 21113310021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12001331107) and next prime (12001331117).

It is a junction number, because it is equal to n+sod(n) for n = 12001331091 and 12001331100.

It is not an unprimeable number, because it can be changed into a prime (12001331117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250027708 + ... + 250027755.

It is an arithmetic number, because the mean of its divisors is an integer number (1875207990).

Almost surely, 2^12001331112 is an apocalyptic number.

12001331112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12001331112 is an abundant number, since it is smaller than the sum of its proper divisors (18001996728).

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

12001331112 is a wasteful number, since it uses less digits than its factorization.

12001331112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500055472 (or 500055468 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12001331112 its reverse (21113310021), we get a palindrome (33114641133).

The spelling of 12001331112 in words is "twelve billion, one million, three hundred thirty-one thousand, one hundred twelve".