12121412 has 6 divisors (see below), whose sum is σ = 21212478. Its totient is φ = 6060704.

The previous prime is 12121393. The next prime is 12121423. The reversal of 12121412 is 21412121.

It is a happy number.

12121412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11519236 + 602176 = 3394^2 + 776^2 .

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515173 + ... + 1515180.

It is an arithmetic number, because the mean of its divisors is an integer number (3535413).

Almost surely, 2^12121412 is an apocalyptic number.

It is an amenable number.

12121412 is a deficient number, since it is larger than the sum of its proper divisors (9091066).

12121412 is a wasteful number, since it uses less digits than its factorization.

12121412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030357 (or 3030355 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 12121412 is about 3481.5818244011. The cubic root of 12121412 is about 229.7123814994.

Adding to 12121412 its reverse (21412121), we get a palindrome (33533533).

The spelling of 12121412 in words is "twelve million, one hundred twenty-one thousand, four hundred twelve".