212243040344 has 16 divisors (see below), whose sum is σ = 404479565520. Its totient is φ = 104381822880.

The previous prime is 212243040323. The next prime is 212243040349. The reversal of 212243040344 is 443040342212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212243040349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217461644 + ... + 217462619.

It is an arithmetic number, because the mean of its divisors is an integer number (25279972845).

Almost surely, 2^212243040344 is an apocalyptic number.

It is an amenable number.

212243040344 is a deficient number, since it is larger than the sum of its proper divisors (192236525176).

212243040344 is a wasteful number, since it uses less digits than its factorization.

212243040344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434924330 (or 434924326 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 212243040344 its reverse (443040342212), we get a palindrome (655283382556).

The spelling of 212243040344 in words is "two hundred twelve billion, two hundred forty-three million, forty thousand, three hundred forty-four".