212230433 has 4 divisors (see below), whose sum is σ = 219076608. Its totient is φ = 205384260.

The previous prime is 212230429. The next prime is 212230441. The reversal of 212230433 is 334032212.

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 212230433 - 2² = 212230429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212230423) 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 3 ways as a sum of consecutive naturals, for example, 3423041 + ... + 3423102.

It is an arithmetic number, because the mean of its divisors is an integer number (54769152).

Almost surely, 2^212230433 is an apocalyptic number.

It is an amenable number.

212230433 is a deficient number, since it is larger than the sum of its proper divisors (6846175).

212230433 is an equidigital number, since it uses as much as digits as its factorization.

212230433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6846174.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 212230433 is about 14568.1307311542. The cubic root of 212230433 is about 596.4891568888.

Adding to 212230433 its reverse (334032212), we get a palindrome (546262645).

The spelling of 212230433 in words is "two hundred twelve million, two hundred thirty thousand, four hundred thirty-three".