12201603 has 4 divisors (see below), whose sum is σ = 16268808. Its totient is φ = 8134400.

The previous prime is 12201599. The next prime is 12201611. The reversal of 12201603 is 30610221.

12201603 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.

It is a cyclic number.

It is not a de Polignac number, because 12201603 - 2² = 12201599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12201643) 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, 2033598 + ... + 2033603.

It is an arithmetic number, because the mean of its divisors is an integer number (4067202).

Almost surely, 2^12201603 is an apocalyptic number.

12201603 is a deficient number, since it is larger than the sum of its proper divisors (4067205).

12201603 is an equidigital number, since it uses as much as digits as its factorization.

12201603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4067204.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 12201603 is about 3493.0793005599. The cubic root of 12201603 is about 230.2178339511.

Adding to 12201603 its reverse (30610221), we get a palindrome (42811824).

The spelling of 12201603 in words is "twelve million, two hundred one thousand, six hundred three".