12120412 has 12 divisors (see below), whose sum is σ = 21289240. Its totient is φ = 6037776.

The previous prime is 12120403. The next prime is 12120419. The reversal of 12120412 is 21402121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12120392 and 12120401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4362 + ... + 6577.

Almost surely, 2^12120412 is an apocalyptic number.

It is an amenable number.

12120412 is a deficient number, since it is larger than the sum of its proper divisors (9168828).

12120412 is a wasteful number, since it uses less digits than its factorization.

12120412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11220 (or 11218 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 12120412 is about 3481.4382085569. The cubic root of 12120412 is about 229.7060643394.

Adding to 12120412 its reverse (21402121), we get a palindrome (33522533).

The spelling of 12120412 in words is "twelve million, one hundred twenty thousand, four hundred twelve".