212231112311 has 2 divisors, whose sum is σ = 212231112312. Its totient is φ = 212231112310.

The previous prime is 212231112281. The next prime is 212231112347. The reversal of 212231112311 is 113211132212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212231112311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212231112361) 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 as a sum of consecutive naturals, namely, 106115556155 + 106115556156.

It is an arithmetic number, because the mean of its divisors is an integer number (106115556156).

Almost surely, 2^212231112311 is an apocalyptic number.

212231112311 is a deficient number, since it is larger than the sum of its proper divisors (1).

212231112311 is an equidigital number, since it uses as much as digits as its factorization.

212231112311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 20.

Adding to 212231112311 its reverse (113211132212), we get a palindrome (325442244523).

The spelling of 212231112311 in words is "two hundred twelve billion, two hundred thirty-one million, one hundred twelve thousand, three hundred eleven".