12012033312 has 72 divisors (see below), whose sum is σ = 34252598016. Its totient is φ = 3993065856.

The previous prime is 12012033259. The next prime is 12012033329. The reversal of 12012033312 is 21333021021.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48873 + ... + 162519.

It is an arithmetic number, because the mean of its divisors is an integer number (475730528).

Almost surely, 2^12012033312 is an apocalyptic number.

12012033312 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 12012033312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17126299008).

12012033312 is an abundant number, since it is smaller than the sum of its proper divisors (22240564704).

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

12012033312 is a wasteful number, since it uses less digits than its factorization.

12012033312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114030 (or 114019 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12012033312 its reverse (21333021021), we get a palindrome (33345054333).

The spelling of 12012033312 in words is "twelve billion, twelve million, thirty-three thousand, three hundred twelve".