212543354606 has 16 divisors (see below), whose sum is σ = 347874836400. Its totient is φ = 96589332480.

The previous prime is 212543354599. The next prime is 212543354609. The reversal of 212543354606 is 606453345212.

It is a super-2 number, since 2×212543354606² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212543354609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961811 + ... + 1161966.

It is an arithmetic number, because the mean of its divisors is an integer number (21742177275).

Almost surely, 2^212543354606 is an apocalyptic number.

212543354606 is a deficient number, since it is larger than the sum of its proper divisors (135331481794).

212543354606 is a wasteful number, since it uses less digits than its factorization.

212543354606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128339.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 212543354606 its reverse (606453345212), we get a palindrome (818996699818).

The spelling of 212543354606 in words is "two hundred twelve billion, five hundred forty-three million, three hundred fifty-four thousand, six hundred six".