12018203 has 8 divisors (see below), whose sum is σ = 12783120. Its totient is φ = 11266560.

The previous prime is 12018187. The next prime is 12018211. The reversal of 12018203 is 30281021.

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 12018203 - 2⁴ = 12018187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12018263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1418 + ... + 5103.

It is an arithmetic number, because the mean of its divisors is an integer number (1597890).

Almost surely, 2^12018203 is an apocalyptic number.

12018203 is a deficient number, since it is larger than the sum of its proper divisors (764917).

12018203 is an equidigital number, since it uses as much as digits as its factorization.

12018203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6637.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 12018203 is about 3466.7279962524. The cubic root of 12018203 is about 229.0585524335.

Adding to 12018203 its reverse (30281021), we get a palindrome (42299224).

It can be divided in two parts, 12018 and 203, that added together give a palindrome (12221).

The spelling of 12018203 in words is "twelve million, eighteen thousand, two hundred three".