211123203 has 8 divisors (see below), whose sum is σ = 281665728. Its totient is φ = 140664744.

The previous prime is 211123189. The next prime is 211123207. The reversal of 211123203 is 302321112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211123203 - 2⁶ = 211123139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211123207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14901 + ... + 25382.

It is an arithmetic number, because the mean of its divisors is an integer number (35208216).

Almost surely, 2^211123203 is an apocalyptic number.

211123203 is a deficient number, since it is larger than the sum of its proper divisors (70542525).

211123203 is a wasteful number, since it uses less digits than its factorization.

211123203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42033.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 211123203 is about 14530.0792496118. The cubic root of 211123203 is about 595.4500307389.

Adding to 211123203 its reverse (302321112), we get a palindrome (513444315).

The spelling of 211123203 in words is "two hundred eleven million, one hundred twenty-three thousand, two hundred three".