12198077 has 4 divisors (see below), whose sum is σ = 12210240. Its totient is φ = 12185916.

The previous prime is 12198071. The next prime is 12198079. The reversal of 12198077 is 77089121.

12198077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77089121 = 3617 ⋅21313.

It is a cyclic number.

It is not a de Polignac number, because 12198077 - 2⁸ = 12197821 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 (12198071) 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, 4427 + ... + 6632.

It is an arithmetic number, because the mean of its divisors is an integer number (3052560).

Almost surely, 2^12198077 is an apocalyptic number.

It is an amenable number.

12198077 is a deficient number, since it is larger than the sum of its proper divisors (12163).

12198077 is a wasteful number, since it uses less digits than its factorization.

12198077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12162.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 12198077 is about 3492.5745518170. The cubic root of 12198077 is about 230.1956558190.

The spelling of 12198077 in words is "twelve million, one hundred ninety-eight thousand, seventy-seven".