212420021030344 has 8 divisors (see below), whose sum is σ = 398287539431910. Its totient is φ = 106210010515168.

The previous prime is 212420021030263. The next prime is 212420021030377. The reversal of 212420021030344 is 443030120024212.

It can be written as a sum of positive squares in only one way, i.e., 206871782109444 + 5548238920900 = 14383038^2 + 2355470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 13276251314389 + ... + 13276251314404.

Almost surely, 2^{212420021030344} is an apocalyptic number.

It is an amenable number.

212420021030344 is a deficient number, since it is larger than the sum of its proper divisors (185867518401566).

212420021030344 is a wasteful number, since it uses less digits than its factorization.

212420021030344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26552502628799 (or 26552502628795 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 212420021030344 its reverse (443030120024212), we get a palindrome (655450141054556).

The spelling of 212420021030344 in words is "two hundred twelve trillion, four hundred twenty billion, twenty-one million, thirty thousand, three hundred forty-four".