212221244404444 has 12 divisors (see below), whose sum is σ = 405149648408568. Its totient is φ = 96464202002000.

The previous prime is 212221244404387. The next prime is 212221244404511. The reversal of 212221244404444 is 444404442122212.

212221244404444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 212221244404397 and 212221244404406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2411605050007 + ... + 2411605050094.

It is an arithmetic number, because the mean of its divisors is an integer number (33762470700714).

Almost surely, 2^{212221244404444} is an apocalyptic number.

It is an amenable number.

212221244404444 is a deficient number, since it is larger than the sum of its proper divisors (192928404004124).

212221244404444 is a wasteful number, since it uses less digits than its factorization.

212221244404444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4823210100116 (or 4823210100114 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 40.

Adding to 212221244404444 its reverse (444404442122212), we get a palindrome (656625686526656).

The spelling of 212221244404444 in words is "two hundred twelve trillion, two hundred twenty-one billion, two hundred forty-four million, four hundred four thousand, four hundred forty-four".