211420205544203 has 16 divisors (see below), whose sum is σ = 211678331719680. Its totient is φ = 211162299417216.

The previous prime is 211420205544157. The next prime is 211420205544269. The reversal of 211420205544203 is 302445502024112.

It is a cyclic number.

It is not a de Polignac number, because 211420205544203 - 2¹⁰ = 211420205543179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211420205541203) 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 15 ways as a sum of consecutive naturals, for example, 20110353875 + ... + 20110364387.

It is an arithmetic number, because the mean of its divisors is an integer number (13229895732480).

Almost surely, 2^{211420205544203} is an apocalyptic number.

211420205544203 is a deficient number, since it is larger than the sum of its proper divisors (258126175477).

211420205544203 is a wasteful number, since it uses less digits than its factorization.

211420205544203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18826.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 211420205544203 its reverse (302445502024112), we get a palindrome (513865707568315).

The spelling of 211420205544203 in words is "two hundred eleven trillion, four hundred twenty billion, two hundred five million, five hundred forty-four thousand, two hundred three".