12198101 has 4 divisors (see below), whose sum is σ = 12216204. Its totient is φ = 12180000.

The previous prime is 12198083. The next prime is 12198113. The reversal of 12198101 is 10189121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8994001 + 3204100 = 2999^2 + 1790^2 .

It is a cyclic number.

It is not a de Polignac number, because 12198101 - 2⁶ = 12198037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12198161) 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, 8000 + ... + 9401.

It is an arithmetic number, because the mean of its divisors is an integer number (3054051).

Almost surely, 2^12198101 is an apocalyptic number.

It is an amenable number.

12198101 is a deficient number, since it is larger than the sum of its proper divisors (18103).

12198101 is an equidigital number, since it uses as much as digits as its factorization.

12198101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18102.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 12198101 is about 3492.5779876762. The cubic root of 12198101 is about 230.1958067907.

The spelling of 12198101 in words is "twelve million, one hundred ninety-eight thousand, one hundred one".