12099012 has 48 divisors (see below), whose sum is σ = 29998080. Its totient is φ = 3787168.

The previous prime is 12099011. The next prime is 12099013. The reversal of 12099012 is 21099021.

12099012 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12099011) and next prime (12099013).

It is a super-2 number, since 2×12099012² = 292772182752288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12099011) 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, 15913 + ... + 16655.

It is an arithmetic number, because the mean of its divisors is an integer number (624960).

Almost surely, 2^12099012 is an apocalyptic number.

12099012 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 12099012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14999040).

12099012 is an abundant number, since it is smaller than the sum of its proper divisors (17899068).

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

12099012 is a wasteful number, since it uses less digits than its factorization.

12099012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 12099012 is about 3478.3634082712. The cubic root of 12099012 is about 229.5707937533.

Subtracting 12099012 from its reverse (21099021), we obtain a palindrome (9000009).

The spelling of 12099012 in words is "twelve million, ninety-nine thousand, twelve".