12281356 has 12 divisors (see below), whose sum is σ = 22426992. Its totient is φ = 5873648.

The previous prime is 12281341. The next prime is 12281389. The reversal of 12281356 is 65318221.

12281356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66655 + ... + 66838.

It is an arithmetic number, because the mean of its divisors is an integer number (1868916).

Almost surely, 2^12281356 is an apocalyptic number.

It is an amenable number.

12281356 is a deficient number, since it is larger than the sum of its proper divisors (10145636).

12281356 is a wasteful number, since it uses less digits than its factorization.

12281356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133520 (or 133518 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 12281356 is about 3504.4765657656. The cubic root of 12281356 is about 230.7183338808.

Adding to 12281356 its reverse (65318221), we get a palindrome (77599577).

The spelling of 12281356 in words is "twelve million, two hundred eighty-one thousand, three hundred fifty-six".