212441444 has 6 divisors (see below), whose sum is σ = 371772534. Its totient is φ = 106220720.

The previous prime is 212441441. The next prime is 212441473. The reversal of 212441444 is 444144212.

It can be written as a sum of positive squares in only one way, i.e., 114233344 + 98208100 = 10688^2 + 9910^2 .

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (212441441) by changing a digit.

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 as a sum of consecutive naturals, namely, 26555177 + ... + 26555184.

It is an arithmetic number, because the mean of its divisors is an integer number (61962089).

Almost surely, 2^212441444 is an apocalyptic number.

It is an amenable number.

212441444 is a deficient number, since it is larger than the sum of its proper divisors (159331090).

212441444 is a wasteful number, since it uses less digits than its factorization.

212441444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53110365 (or 53110363 counting only the distinct ones).

The product of its digits is 4096, while the sum is 26.

The square root of 212441444 is about 14575.3711445026. The cubic root of 212441444 is about 596.6867786916.

Adding to 212441444 its reverse (444144212), we get a palindrome (656585656).

The spelling of 212441444 in words is "two hundred twelve million, four hundred forty-one thousand, four hundred forty-four".