12198222 has 32 divisors (see below), whose sum is σ = 27223200. Its totient is φ = 4048704.

The previous prime is 12198217. The next prime is 12198229. The reversal of 12198222 is 22289121.

It is a super-2 number, since 2×12198222² = 297593239922568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 21154 + ... + 21722.

It is an arithmetic number, because the mean of its divisors is an integer number (850725).

Almost surely, 2^12198222 is an apocalyptic number.

12198222 is an abundant number, since it is smaller than the sum of its proper divisors (15024978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12198222 is a wasteful number, since it uses less digits than its factorization.

12198222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977 (or 971 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 12198222 is about 3492.5953100810. The cubic root of 12198222 is about 230.1965679365.

The spelling of 12198222 in words is "twelve million, one hundred ninety-eight thousand, two hundred twenty-two".