201212421003203 has 4 divisors (see below), whose sum is σ = 201573664129440. Its totient is φ = 200851177876968.

The previous prime is 201212421003157. The next prime is 201212421003227. The reversal of 201212421003203 is 302300124212102.

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 201212421003203 - 2⁸ = 201212421002947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201212421003263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180621562283 + ... + 180621563396.

It is an arithmetic number, because the mean of its divisors is an integer number (50393416032360).

Almost surely, 2^{201212421003203} is an apocalyptic number.

201212421003203 is a deficient number, since it is larger than the sum of its proper divisors (361243126237).

201212421003203 is an equidigital number, since it uses as much as digits as its factorization.

201212421003203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361243126236.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 201212421003203 its reverse (302300124212102), we get a palindrome (503512545215305).

The spelling of 201212421003203 in words is "two hundred one trillion, two hundred twelve billion, four hundred twenty-one million, three thousand, two hundred three".