12201545 has 8 divisors (see below), whose sum is σ = 14695296. Its totient is φ = 9725616.

The previous prime is 12201509. The next prime is 12201557. The reversal of 12201545 is 54510221.

12201545 is digitally balanced in base 2, 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 a cyclic number.

It is not a de Polignac number, because 12201545 - 2¹⁰ = 12200521 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2897 + ... + 5726.

It is an arithmetic number, because the mean of its divisors is an integer number (1836912).

Almost surely, 2^12201545 is an apocalyptic number.

It is an amenable number.

12201545 is a deficient number, since it is larger than the sum of its proper divisors (2493751).

12201545 is an equidigital number, since it uses as much as digits as its factorization.

12201545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8911.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 12201545 is about 3493.0709984196. The cubic root of 12201545 is about 230.2174691724.

Adding to 12201545 its reverse (54510221), we get a palindrome (66711766).

The spelling of 12201545 in words is "twelve million, two hundred one thousand, five hundred forty-five".