211123200133 has 6 divisors (see below), whose sum is σ = 220701568934. Its totient is φ = 201943930056.

The previous prime is 211123200059. The next prime is 211123200143. The reversal of 211123200133 is 331002321112.

It can be written as a sum of positive squares in only one way, i.e., 209784152484 + 1339047649 = 458022^2 + 36593^2 .

It is not a de Polignac number, because 211123200133 - 2⁹ = 211123199621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211123200133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211123200143) 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 5 ways as a sum of consecutive naturals, for example, 199548810 + ... + 199549867.

Almost surely, 2^211123200133 is an apocalyptic number.

211123200133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

211123200133 is a deficient number, since it is larger than the sum of its proper divisors (9578368801).

211123200133 is an equidigital number, since it uses as much as digits as its factorization.

211123200133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399098723 (or 399098700 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 211123200133 its reverse (331002321112), we get a palindrome (542125521245).

The spelling of 211123200133 in words is "two hundred eleven billion, one hundred twenty-three million, two hundred thousand, one hundred thirty-three".