211500205503103 has 16 divisors (see below), whose sum is σ = 231574739307552. Its totient is φ = 191568060432000.

The previous prime is 211500205503101. The next prime is 211500205503161. The reversal of 211500205503103 is 301305502005112.

It is a cyclic number.

It is not a de Polignac number, because 211500205503103 - 2¹ = 211500205503101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211500205503101) 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, 25961328 + ... + 33120853.

It is an arithmetic number, because the mean of its divisors is an integer number (14473421206722).

Almost surely, 2^{211500205503103} is an apocalyptic number.

211500205503103 is a deficient number, since it is larger than the sum of its proper divisors (20074533804449).

211500205503103 is a wasteful number, since it uses less digits than its factorization.

211500205503103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59083386.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 211500205503103 its reverse (301305502005112), we get a palindrome (512805707508215).

The spelling of 211500205503103 in words is "two hundred eleven trillion, five hundred billion, two hundred five million, five hundred three thousand, one hundred three".