12011712 has 56 divisors (see below), whose sum is σ = 32253936. Its totient is φ = 3944448.

The previous prime is 12011711. The next prime is 12011723. The reversal of 12011712 is 21711021.

It is a junction number, because it is equal to n+sod(n) for n = 12011691 and 12011700.

It is not an unprimeable number, because it can be changed into a prime (12011711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13588 + ... + 14444.

Almost surely, 2^12011712 is an apocalyptic number.

12011712 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 12011712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16126968).

12011712 is an abundant number, since it is smaller than the sum of its proper divisors (20242224).

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

12011712 is an equidigital number, since it uses as much as digits as its factorization.

12011712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 12011712 is about 3465.7916844496. The cubic root of 12011712 is about 229.0173070321.

Adding to 12011712 its reverse (21711021), we get a palindrome (33722733).

The spelling of 12011712 in words is "twelve million, eleven thousand, seven hundred twelve".