12212198 has 8 divisors (see below), whose sum is σ = 18708192. Its totient is φ = 5976136.

The previous prime is 12212197. The next prime is 12212201. The reversal of 12212198 is 89121221.

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

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212191) 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, 64865 + ... + 65052.

It is an arithmetic number, because the mean of its divisors is an integer number (2338524).

Almost surely, 2^12212198 is an apocalyptic number.

12212198 is a deficient number, since it is larger than the sum of its proper divisors (6495994).

12212198 is a wasteful number, since it uses less digits than its factorization.

12212198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129966.

The product of its digits is 576, while the sum is 26.

The square root of 12212198 is about 3494.5955416901. The cubic root of 12212198 is about 230.2844495779.

The spelling of 12212198 in words is "twelve million, two hundred twelve thousand, one hundred ninety-eight".