211043534521 has 16 divisors (see below), whose sum is σ = 219374285760. Its totient is φ = 202877498880.

The previous prime is 211043534519. The next prime is 211043534557. The reversal of 211043534521 is 125435340112.

It is not a de Polignac number, because 211043534521 - 2¹ = 211043534519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211043534561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1207921 + ... + 1371553.

It is an arithmetic number, because the mean of its divisors is an integer number (13710892860).

Almost surely, 2^211043534521 is an apocalyptic number.

It is an amenable number.

211043534521 is a deficient number, since it is larger than the sum of its proper divisors (8330751239).

211043534521 is a wasteful number, since it uses less digits than its factorization.

211043534521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164136.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 211043534521 its reverse (125435340112), we get a palindrome (336478874633).

The spelling of 211043534521 in words is "two hundred eleven billion, forty-three million, five hundred thirty-four thousand, five hundred twenty-one".