203320123211 has 6 divisors (see below), whose sum is σ = 212544477180. Its totient is φ = 194480117348.

The previous prime is 203320123189. The next prime is 203320123217. The reversal of 203320123211 is 112321023302.

It is not a de Polignac number, because 203320123211 - 2¹⁸ = 203319861067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203320123217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 192173501 + ... + 192174558.

It is an arithmetic number, because the mean of its divisors is an integer number (35424079530).

Almost surely, 2^203320123211 is an apocalyptic number.

203320123211 is a deficient number, since it is larger than the sum of its proper divisors (9224353969).

203320123211 is an equidigital number, since it uses as much as digits as its factorization.

203320123211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384348105 (or 384348082 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 203320123211 its reverse (112321023302), we get a palindrome (315641146513).

Subtracting from 203320123211 its reverse (112321023302), we obtain a palindrome (90999099909).

The spelling of 203320123211 in words is "two hundred three billion, three hundred twenty million, one hundred twenty-three thousand, two hundred eleven".