211144424 has 48 divisors (see below), whose sum is σ = 414692460. Its totient is φ = 100723200.

The previous prime is 211144411. The next prime is 211144457. The reversal of 211144424 is 424441112.

It can be written as a sum of positive squares in 6 ways, for example, as 4072324 + 207072100 = 2018^2 + 14390^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 211144424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1220402 + ... + 1220574.

Almost surely, 2^211144424 is an apocalyptic number.

It is an amenable number.

211144424 is a deficient number, since it is larger than the sum of its proper divisors (203548036).

211144424 is a wasteful number, since it uses less digits than its factorization.

211144424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 277 counting only the distinct ones).

The product of its digits is 1024, while the sum is 23.

The square root of 211144424 is about 14530.8094750430. The cubic root of 211144424 is about 595.4699805779.

Adding to 211144424 its reverse (424441112), we get a palindrome (635585536).

The spelling of 211144424 in words is "two hundred eleven million, one hundred forty-four thousand, four hundred twenty-four".