213110211111 has 32 divisors (see below), whose sum is σ = 329114419200. Its totient is φ = 120139100640.

The previous prime is 213110211053. The next prime is 213110211121. The reversal of 213110211111 is 111112011312.

It is not a de Polignac number, because 213110211111 - 2¹⁴ = 213110194727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213110211121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2037666 + ... + 2139696.

It is an arithmetic number, because the mean of its divisors is an integer number (10284825600).

Almost surely, 2^213110211111 is an apocalyptic number.

213110211111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

213110211111 is a deficient number, since it is larger than the sum of its proper divisors (116004208089).

213110211111 is a wasteful number, since it uses less digits than its factorization.

213110211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103379.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 213110211111 its reverse (111112011312), we get a palindrome (324222222423).

The spelling of 213110211111 in words is "two hundred thirteen billion, one hundred ten million, two hundred eleven thousand, one hundred eleven".