12198227 has 4 divisors (see below), whose sum is σ = 12365400. Its totient is φ = 12031056.

The previous prime is 12198217. The next prime is 12198229. The reversal of 12198227 is 72289121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72289121 = 3923 ⋅18427.

It is a cyclic number.

It is not a de Polignac number, because 12198227 - 2⁸ = 12197971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12198193 and 12198202.

It is not an unprimeable number, because it can be changed into a prime (12198229) 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, 83477 + ... + 83622.

It is an arithmetic number, because the mean of its divisors is an integer number (3091350).

Almost surely, 2^12198227 is an apocalyptic number.

12198227 is a deficient number, since it is larger than the sum of its proper divisors (167173).

12198227 is an equidigital number, since it uses as much as digits as its factorization.

12198227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167172.

The product of its digits is 4032, while the sum is 32.

The square root of 12198227 is about 3492.5960258810. The cubic root of 12198227 is about 230.1965993887.

The spelling of 12198227 in words is "twelve million, one hundred ninety-eight thousand, two hundred twenty-seven".