12198061 has 4 divisors (see below), whose sum is σ = 12915612. Its totient is φ = 11480512.

The previous prime is 12198059. The next prime is 12198071. The reversal of 12198061 is 16089121.

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: 16089121 = 23 ⋅699527.

It can be written as a sum of positive squares in 2 ways, for example, as 5978025 + 6220036 = 2445^2 + 2494^2 .

It is a cyclic number.

It is not a de Polignac number, because 12198061 - 2¹ = 12198059 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 (12198001) 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, 358750 + ... + 358783.

It is an arithmetic number, because the mean of its divisors is an integer number (3228903).

Almost surely, 2^12198061 is an apocalyptic number.

It is an amenable number.

12198061 is a deficient number, since it is larger than the sum of its proper divisors (717551).

12198061 is an equidigital number, since it uses as much as digits as its factorization.

12198061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717550.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 12198061 is about 3492.5722612424. The cubic root of 12198061 is about 230.1955551712.

It can be divided in two parts, 12 and 198061, that multiplied together give a palindrome (2376732).

The spelling of 12198061 in words is "twelve million, one hundred ninety-eight thousand, sixty-one".