211201223203 has 4 divisors (see below), whose sum is σ = 211202722800. Its totient is φ = 211199723608.

The previous prime is 211201223183. The next prime is 211201223231. The reversal of 211201223203 is 302322102112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211201223203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211201223243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513775 + ... + 828472.

It is an arithmetic number, because the mean of its divisors is an integer number (52800680700).

Almost surely, 2^211201223203 is an apocalyptic number.

211201223203 is a deficient number, since it is larger than the sum of its proper divisors (1499597).

211201223203 is a wasteful number, since it uses less digits than its factorization.

211201223203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499596.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 211201223203 its reverse (302322102112), we get a palindrome (513523325315).

The spelling of 211201223203 in words is "two hundred eleven billion, two hundred one million, two hundred twenty-three thousand, two hundred three".