212420203665234 has 32 divisors (see below), whose sum is σ = 439985556097920. Its totient is φ = 68288048422272.

The previous prime is 212420203665203. The next prime is 212420203665289. The reversal of 212420203665234 is 432566302024212.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 688011259 + ... + 688319934.

It is an arithmetic number, because the mean of its divisors is an integer number (13749548628060).

Almost surely, 2^{212420203665234} is an apocalyptic number.

212420203665234 is an abundant number, since it is smaller than the sum of its proper divisors (227565352432686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212420203665234 is a wasteful number, since it uses less digits than its factorization.

212420203665234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376332114.

The product of its (nonzero) digits is 829440, while the sum is 42.

Adding to 212420203665234 its reverse (432566302024212), we get a palindrome (644986505689446).

The spelling of 212420203665234 in words is "two hundred twelve trillion, four hundred twenty billion, two hundred three million, six hundred sixty-five thousand, two hundred thirty-four".