211303113103211 has 4 divisors (see below), whose sum is σ = 211306397688912. Its totient is φ = 211299828517512.

The previous prime is 211303113103177. The next prime is 211303113103213. The reversal of 211303113103211 is 112301311303112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211303113103211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211303113103213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1642196351 + ... + 1642325016.

It is an arithmetic number, because the mean of its divisors is an integer number (52826599422228).

Almost surely, 2^{211303113103211} is an apocalyptic number.

211303113103211 is a deficient number, since it is larger than the sum of its proper divisors (3284585701).

211303113103211 is an equidigital number, since it uses as much as digits as its factorization.

211303113103211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284585700.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 211303113103211 its reverse (112301311303112), we get a palindrome (323604424406323).

The spelling of 211303113103211 in words is "two hundred eleven trillion, three hundred three billion, one hundred thirteen million, one hundred three thousand, two hundred eleven".