12216927 has 4 divisors (see below), whose sum is σ = 16289240. Its totient is φ = 8144616.

The previous prime is 12216907. The next prime is 12216937. The reversal of 12216927 is 72961221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12216927 - 2⁸ = 12216671 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12216894 and 12216903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12216907) 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, 2036152 + ... + 2036157.

It is an arithmetic number, because the mean of its divisors is an integer number (4072310).

Almost surely, 2^12216927 is an apocalyptic number.

12216927 is a deficient number, since it is larger than the sum of its proper divisors (4072313).

12216927 is an equidigital number, since it uses as much as digits as its factorization.

12216927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4072312.

The product of its digits is 3024, while the sum is 30.

The square root of 12216927 is about 3495.2720924128. The cubic root of 12216927 is about 230.3141705346.

The spelling of 12216927 in words is "twelve million, two hundred sixteen thousand, nine hundred twenty-seven".