12222889 has 4 divisors (see below), whose sum is σ = 13969024. Its totient is φ = 10476756.

The previous prime is 12222869. The next prime is 12222911. The reversal of 12222889 is 98822221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12222889 - 2⁵ = 12222857 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12222869) by changing a digit.

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, 873057 + ... + 873070.

It is an arithmetic number, because the mean of its divisors is an integer number (3492256).

Almost surely, 2^12222889 is an apocalyptic number.

It is an amenable number.

12222889 is a deficient number, since it is larger than the sum of its proper divisors (1746135).

12222889 is an equidigital number, since it uses as much as digits as its factorization.

12222889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746134.

The product of its digits is 9216, while the sum is 34.

The square root of 12222889 is about 3496.1248547499. The cubic root of 12222889 is about 230.3516297575.

The spelling of 12222889 in words is "twelve million, two hundred twenty-two thousand, eight hundred eighty-nine".