12228712 has 16 divisors (see below), whose sum is σ = 24277860. Its totient is φ = 5754624.

The previous prime is 12228707. The next prime is 12228721. The reversal of 12228712 is 21782221.

It can be written as a sum of positive squares in 2 ways, for example, as 10850436 + 1378276 = 3294^2 + 1174^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44823 + ... + 45094.

Almost surely, 2^12228712 is an apocalyptic number.

It is an amenable number.

12228712 is a deficient number, since it is larger than the sum of its proper divisors (12049148).

12228712 is a wasteful number, since it uses less digits than its factorization.

12228712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89940 (or 89936 counting only the distinct ones).

The product of its digits is 896, while the sum is 25.

The square root of 12228712 is about 3496.9575347722. The cubic root of 12228712 is about 230.3882038875.

The spelling of 12228712 in words is "twelve million, two hundred twenty-eight thousand, seven hundred twelve".