212224133 has 8 divisors (see below), whose sum is σ = 231754176. Its totient is φ = 192733600.

The previous prime is 212224123. The next prime is 212224139. The reversal of 212224133 is 331422212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212224133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212224139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1985 + ... + 20697.

It is an arithmetic number, because the mean of its divisors is an integer number (28969272).

Almost surely, 2^212224133 is an apocalyptic number.

It is an amenable number.

212224133 is a deficient number, since it is larger than the sum of its proper divisors (19530043).

212224133 is a wasteful number, since it uses less digits than its factorization.

212224133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19755.

The product of its digits is 576, while the sum is 20.

The square root of 212224133 is about 14567.9145041423. The cubic root of 212224133 is about 596.4832546268.

Adding to 212224133 its reverse (331422212), we get a palindrome (543646345).

The spelling of 212224133 in words is "two hundred twelve million, two hundred twenty-four thousand, one hundred thirty-three".