212321044 has 12 divisors (see below), whose sum is σ = 400143604. Its totient is φ = 97994304.

The previous prime is 212321003. The next prime is 212321051. The reversal of 212321044 is 440123212.

It can be written as a sum of positive squares in 2 ways, for example, as 120736144 + 91584900 = 10988^2 + 9570^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2041497 + ... + 2041600.

Almost surely, 2^212321044 is an apocalyptic number.

It is an amenable number.

212321044 is a deficient number, since it is larger than the sum of its proper divisors (187822560).

212321044 is a wasteful number, since it uses less digits than its factorization.

212321044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083114 (or 4083112 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 212321044 is about 14571.2403041059. The cubic root of 212321044 is about 596.5740344252.

Adding to 212321044 its reverse (440123212), we get a palindrome (652444256).

The spelling of 212321044 in words is "two hundred twelve million, three hundred twenty-one thousand, forty-four".