212124533 has 4 divisors (see below), whose sum is σ = 212174688. Its totient is φ = 212074380.

The previous prime is 212124509. The next prime is 212124553. The reversal of 212124533 is 335421212.

212124533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212124533 - 2¹⁸ = 211862389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212124499 and 212124508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212124553) 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, 18083 + ... + 27408.

It is an arithmetic number, because the mean of its divisors is an integer number (53043672).

Almost surely, 2^212124533 is an apocalyptic number.

It is an amenable number.

212124533 is a deficient number, since it is larger than the sum of its proper divisors (50155).

212124533 is an equidigital number, since it uses as much as digits as its factorization.

212124533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50154.

The product of its digits is 1440, while the sum is 23.

The square root of 212124533 is about 14564.4956315006. The cubic root of 212124533 is about 596.3899271500.

Adding to 212124533 its reverse (335421212), we get a palindrome (547545745).

The spelling of 212124533 in words is "two hundred twelve million, one hundred twenty-four thousand, five hundred thirty-three".