12013512 has 64 divisors (see below), whose sum is σ = 35143680. Its totient is φ = 3350592.

The previous prime is 12013501. The next prime is 12013517. The reversal of 12013512 is 21531021.

It is a junction number, because it is equal to n+sod(n) for n = 12013491 and 12013500.

It is not an unprimeable number, because it can be changed into a prime (12013517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6393 + ... + 8055.

It is an arithmetic number, because the mean of its divisors is an integer number (549120).

Almost surely, 2^12013512 is an apocalyptic number.

12013512 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 12013512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17571840).

12013512 is an abundant number, since it is smaller than the sum of its proper divisors (23130168).

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

12013512 is a wasteful number, since it uses less digits than its factorization.

12013512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722 (or 1718 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 12013512 is about 3466.0513556495. The cubic root of 12013512 is about 229.0287461610.

Adding to 12013512 its reverse (21531021), we get a palindrome (33544533).

The spelling of 12013512 in words is "twelve million, thirteen thousand, five hundred twelve".