12200345 has 4 divisors (see below), whose sum is σ = 14640420. Its totient is φ = 9760272.

The previous prime is 12200341. The next prime is 12200351. The reversal of 12200345 is 54300221.

12200345 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 an emirpimes, since its reverse is a distinct semiprime: 54300221 = 373 ⋅145577.

It can be written as a sum of positive squares in 2 ways, for example, as 9665881 + 2534464 = 3109^2 + 1592^2 .

It is a cyclic number.

It is not a de Polignac number, because 12200345 - 2² = 12200341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12200341) 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, 1220030 + ... + 1220039.

It is an arithmetic number, because the mean of its divisors is an integer number (3660105).

Almost surely, 2^12200345 is an apocalyptic number.

It is an amenable number.

12200345 is a deficient number, since it is larger than the sum of its proper divisors (2440075).

12200345 is an equidigital number, since it uses as much as digits as its factorization.

12200345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440074.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 12200345 is about 3492.8992255718. The cubic root of 12200345 is about 230.2099217670.

Adding to 12200345 its reverse (54300221), we get a palindrome (66500566).

The spelling of 12200345 in words is "twelve million, two hundred thousand, three hundred forty-five".