12211198 has 8 divisors (see below), whose sum is σ = 18353520. Its totient is φ = 6093360.

The previous prime is 12211193. The next prime is 12211217. The reversal of 12211198 is 89111221.

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

It is a super-2 number, since 2×12211198² = 298226713190408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211193) 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, 4818 + ... + 6901.

It is an arithmetic number, because the mean of its divisors is an integer number (2294190).

Almost surely, 2^12211198 is an apocalyptic number.

12211198 is a deficient number, since it is larger than the sum of its proper divisors (6142322).

12211198 is a wasteful number, since it uses less digits than its factorization.

12211198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12242.

The product of its digits is 288, while the sum is 25.

The square root of 12211198 is about 3494.4524606868. The cubic root of 12211198 is about 230.2781637660.

The spelling of 12211198 in words is "twelve million, two hundred eleven thousand, one hundred ninety-eight".