12228047 has 4 divisors (see below), whose sum is σ = 13168680. Its totient is φ = 11287416.

The previous prime is 12228031. The next prime is 12228061. The reversal of 12228047 is 74082221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74082221 = 3917 ⋅18913.

It is a cyclic number.

It is not a de Polignac number, because 12228047 - 2⁴ = 12228031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12228017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470297 + ... + 470322.

It is an arithmetic number, because the mean of its divisors is an integer number (3292170).

Almost surely, 2^12228047 is an apocalyptic number.

12228047 is a deficient number, since it is larger than the sum of its proper divisors (940633).

12228047 is an equidigital number, since it uses as much as digits as its factorization.

12228047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940632.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 12228047 is about 3496.8624508265. The cubic root of 12228047 is about 230.3840276250.

The spelling of 12228047 in words is "twelve million, two hundred twenty-eight thousand, forty-seven".