212234123111 has 4 divisors (see below), whose sum is σ = 224718483312. Its totient is φ = 199749762912.

The previous prime is 212234123027. The next prime is 212234123119. The reversal of 212234123111 is 111321432212.

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 212234123111 - 2²⁶ = 212167014247 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 (212234123119) 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, 6242180075 + ... + 6242180108.

It is an arithmetic number, because the mean of its divisors is an integer number (56179620828).

Almost surely, 2^212234123111 is an apocalyptic number.

212234123111 is a deficient number, since it is larger than the sum of its proper divisors (12484360201).

212234123111 is a wasteful number, since it uses less digits than its factorization.

212234123111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12484360200.

The product of its digits is 576, while the sum is 23.

Adding to 212234123111 its reverse (111321432212), we get a palindrome (323555555323).

The spelling of 212234123111 in words is "two hundred twelve billion, two hundred thirty-four million, one hundred twenty-three thousand, one hundred eleven".