12228671 has 12 divisors (see below), whose sum is σ = 15134832. Its totient is φ = 9674496.

The previous prime is 12228653. The next prime is 12228677. The reversal of 12228671 is 17682221.

It is a de Polignac number, because none of the positive numbers 2^k-12228671 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12228677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3986 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (1261236).

Almost surely, 2^12228671 is an apocalyptic number.

12228671 is a deficient number, since it is larger than the sum of its proper divisors (2906161).

12228671 is a wasteful number, since it uses less digits than its factorization.

12228671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10370 (or 10357 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 12228671 is about 3496.9516725285. The cubic root of 12228671 is about 230.3879464080.

The spelling of 12228671 in words is "twelve million, two hundred twenty-eight thousand, six hundred seventy-one".