12220727 has 8 divisors (see below), whose sum is σ = 12656640. Its totient is φ = 11787480.

The previous prime is 12220721. The next prime is 12220757. The reversal of 12220727 is 72702221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12220727 - 2¹⁶ = 12155191 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 (12220721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14438 + ... + 15260.

It is an arithmetic number, because the mean of its divisors is an integer number (1582080).

Almost surely, 2^12220727 is an apocalyptic number.

12220727 is a deficient number, since it is larger than the sum of its proper divisors (435913).

12220727 is an equidigital number, since it uses as much as digits as its factorization.

12220727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 12220727 is about 3495.8156415921. The cubic root of 12220727 is about 230.3380473279.

Adding to 12220727 its reverse (72702221), we get a palindrome (84922948).

The spelling of 12220727 in words is "twelve million, two hundred twenty thousand, seven hundred twenty-seven".