212232312111 has 4 divisors (see below), whose sum is σ = 282976416152. Its totient is φ = 141488208072.

The previous prime is 212232312059. The next prime is 212232312133. The reversal of 212232312111 is 111213232212.

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

It is not a de Polignac number, because 212232312111 - 2⁷ = 212232311983 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 (212232312161) 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, 35372052016 + ... + 35372052021.

It is an arithmetic number, because the mean of its divisors is an integer number (70744104038).

Almost surely, 2^212232312111 is an apocalyptic number.

212232312111 is a deficient number, since it is larger than the sum of its proper divisors (70744104041).

212232312111 is an equidigital number, since it uses as much as digits as its factorization.

212232312111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70744104040.

The product of its digits is 288, while the sum is 21.

Adding to 212232312111 its reverse (111213232212), we get a palindrome (323445544323).

The spelling of 212232312111 in words is "two hundred twelve billion, two hundred thirty-two million, three hundred twelve thousand, one hundred eleven".