203421331211 has 6 divisors (see below), whose sum is σ = 236632977180. Its totient is φ = 174361140996.

The previous prime is 203421331199. The next prime is 203421331213. The reversal of 203421331211 is 112133124302.

It is not a de Polignac number, because 203421331211 - 2³⁰ = 202347589387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203421331213) 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 5 ways as a sum of consecutive naturals, for example, 2075727821 + ... + 2075727918.

It is an arithmetic number, because the mean of its divisors is an integer number (39438829530).

Almost surely, 2^203421331211 is an apocalyptic number.

203421331211 is a deficient number, since it is larger than the sum of its proper divisors (33211645969).

203421331211 is an equidigital number, since it uses as much as digits as its factorization.

203421331211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4151455753 (or 4151455746 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 203421331211 its reverse (112133124302), we get a palindrome (315554455513).

The spelling of 203421331211 in words is "two hundred three billion, four hundred twenty-one million, three hundred thirty-one thousand, two hundred eleven".