203123220211 has 8 divisors (see below), whose sum is σ = 212068602144. Its totient is φ = 194187333120.

The previous prime is 203123220199. The next prime is 203123220247. The reversal of 203123220211 is 112022321302.

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 203123220211 - 2¹⁷ = 203123089139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203123290211) 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 7 ways as a sum of consecutive naturals, for example, 2329966 + ... + 2415571.

It is an arithmetic number, because the mean of its divisors is an integer number (26508575268).

Almost surely, 2^203123220211 is an apocalyptic number.

203123220211 is a deficient number, since it is larger than the sum of its proper divisors (8945381933).

203123220211 is a wasteful number, since it uses less digits than its factorization.

203123220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4747421.

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

Adding to 203123220211 its reverse (112022321302), we get a palindrome (315145541513).

The spelling of 203123220211 in words is "two hundred three billion, one hundred twenty-three million, two hundred twenty thousand, two hundred eleven".