212023303444 has 48 divisors (see below), whose sum is σ = 386233734096. Its totient is φ = 101766758400.

The previous prime is 212023303441. The next prime is 212023303447. The reversal of 212023303444 is 444303320212.

212023303444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212023303441) and next prime (212023303447).

It can be written as a sum of positive squares in 8 ways, for example, as 2431476100 + 209591827344 = 49310^2 + 457812^2 .

It is a super-3 number, since 3×212023303444³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212023303441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2713564 + ... + 2790604.

It is an arithmetic number, because the mean of its divisors is an integer number (8046536127).

Almost surely, 2^212023303444 is an apocalyptic number.

It is an amenable number.

212023303444 is a deficient number, since it is larger than the sum of its proper divisors (174210430652).

212023303444 is a wasteful number, since it uses less digits than its factorization.

212023303444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77356 (or 77354 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 212023303444 its reverse (444303320212), we get a palindrome (656326623656).

The spelling of 212023303444 in words is "two hundred twelve billion, twenty-three million, three hundred three thousand, four hundred forty-four".