213311110111 has 4 divisors (see below), whose sum is σ = 232703029224. Its totient is φ = 193919191000.

The previous prime is 213311110099. The next prime is 213311110147. The reversal of 213311110111 is 111011113312.

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

It is a cyclic number.

It is not a de Polignac number, because 213311110111 - 2³⁷ = 75872156639 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 (213311116111) 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 3 ways as a sum of consecutive naturals, for example, 9695959540 + ... + 9695959561.

It is an arithmetic number, because the mean of its divisors is an integer number (58175757306).

Almost surely, 2^213311110111 is an apocalyptic number.

213311110111 is a deficient number, since it is larger than the sum of its proper divisors (19391919113).

213311110111 is a wasteful number, since it uses less digits than its factorization.

213311110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19391919112.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 213311110111 its reverse (111011113312), we get a palindrome (324322223423).

The spelling of 213311110111 in words is "two hundred thirteen billion, three hundred eleven million, one hundred ten thousand, one hundred eleven".