12561412 has 6 divisors (see below), whose sum is σ = 21982478. Its totient is φ = 6280704.

The previous prime is 12561401. The next prime is 12561431. The reversal of 12561412 is 21416521.

12561412 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., 7650756 + 4910656 = 2766^2 + 2216^2 .

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, 1570173 + ... + 1570180.

Almost surely, 2^12561412 is an apocalyptic number.

It is an amenable number.

12561412 is a deficient number, since it is larger than the sum of its proper divisors (9421066).

12561412 is a wasteful number, since it uses less digits than its factorization.

12561412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140357 (or 3140355 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 12561412 is about 3544.2082331601. The cubic root of 12561412 is about 232.4588866294.

Adding to 12561412 its reverse (21416521), we get a palindrome (33977933).

The spelling of 12561412 in words is "twelve million, five hundred sixty-one thousand, four hundred twelve".