213113220111 has 24 divisors (see below), whose sum is σ = 353489235840. Its totient is φ = 122361656400.

The previous prime is 213113220041. The next prime is 213113220119. The reversal of 213113220111 is 111022311312.

213113220111 is a `hidden beast` number, since 21 + 311 + 3 + 220 + 111 = 666.

213113220111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213113220111 - 2²⁵ = 213079665679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213113220119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56647035 + ... + 56650796.

It is an arithmetic number, because the mean of its divisors is an integer number (14728718160).

Almost surely, 2^213113220111 is an apocalyptic number.

213113220111 is a deficient number, since it is larger than the sum of its proper divisors (140376015729).

213113220111 is a wasteful number, since it uses less digits than its factorization.

213113220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113297867 (or 113297864 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 213113220111 its reverse (111022311312), we get a palindrome (324135531423).

The spelling of 213113220111 in words is "two hundred thirteen billion, one hundred thirteen million, two hundred twenty thousand, one hundred eleven".