212204211043223 has 4 divisors (see below), whose sum is σ = 242519098335120. Its totient is φ = 181889323751328.

The previous prime is 212204211043219. The next prime is 212204211043241. The reversal of 212204211043223 is 322340112402212.

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 212204211043223 - 2² = 212204211043219 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 (212204211042223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15157443645938 + ... + 15157443645951.

It is an arithmetic number, because the mean of its divisors is an integer number (60629774583780).

Almost surely, 2^{212204211043223} is an apocalyptic number.

212204211043223 is a deficient number, since it is larger than the sum of its proper divisors (30314887291897).

212204211043223 is an equidigital number, since it uses as much as digits as its factorization.

212204211043223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30314887291896.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 212204211043223 its reverse (322340112402212), we get a palindrome (534544323445435).

The spelling of 212204211043223 in words is "two hundred twelve trillion, two hundred four billion, two hundred eleven million, forty-three thousand, two hundred twenty-three".