12081612 has 24 divisors (see below), whose sum is σ = 28257712. Its totient is φ = 4017600.

The previous prime is 12081583. The next prime is 12081613. The reversal of 12081612 is 21618021.

12081612 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 not an unprimeable number, because it can be changed into a prime (12081613) 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, 5562 + ... + 7422.

Almost surely, 2^12081612 is an apocalyptic number.

12081612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12081612 is an abundant number, since it is smaller than the sum of its proper divisors (16176100).

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

12081612 is a wasteful number, since it uses less digits than its factorization.

12081612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409 (or 2407 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 12081612 is about 3475.8613321017. The cubic root of 12081612 is about 229.4606897703.

Adding to 12081612 its reverse (21618021), we get a palindrome (33699633).

The spelling of 12081612 in words is "twelve million, eighty-one thousand, six hundred twelve".