12200545 has 8 divisors (see below), whose sum is σ = 16732224. Its totient is φ = 8366064.

The previous prime is 12200537. The next prime is 12200581. The reversal of 12200545 is 54500221.

12200545 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12200545 - 2³ = 12200537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 174259 + ... + 174328.

It is an arithmetic number, because the mean of its divisors is an integer number (2091528).

Almost surely, 2^12200545 is an apocalyptic number.

It is an amenable number.

12200545 is a deficient number, since it is larger than the sum of its proper divisors (4531679).

12200545 is an equidigital number, since it uses as much as digits as its factorization.

12200545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348599.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 12200545 is about 3492.9278549664. The cubic root of 12200545 is about 230.2111797022.

Adding to 12200545 its reverse (54500221), we get a palindrome (66700766).

The spelling of 12200545 in words is "twelve million, two hundred thousand, five hundred forty-five".