212444343311 has 4 divisors (see below), whose sum is σ = 212639068824. Its totient is φ = 212249617800.

The previous prime is 212444343299. The next prime is 212444343329. The reversal of 212444343311 is 113343444212.

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 212444343311 - 2³⁰ = 211370601487 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 (212444343611) 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, 97361120 + ... + 97363301.

It is an arithmetic number, because the mean of its divisors is an integer number (53159767206).

Almost surely, 2^212444343311 is an apocalyptic number.

212444343311 is a deficient number, since it is larger than the sum of its proper divisors (194725513).

212444343311 is a wasteful number, since it uses less digits than its factorization.

212444343311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194725512.

The product of its digits is 27648, while the sum is 32.

Adding to 212444343311 its reverse (113343444212), we get a palindrome (325787787523).

The spelling of 212444343311 in words is "two hundred twelve billion, four hundred forty-four million, three hundred forty-three thousand, three hundred eleven".