212422433 has 4 divisors (see below), whose sum is σ = 212845248. Its totient is φ = 211999620.

The previous prime is 212422423. The next prime is 212422453. The reversal of 212422433 is 334224212.

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 212422433 - 2⁴ = 212422417 is a prime.

It is a super-4 number, since 4×212422433⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212422399 and 212422408.

It is not an unprimeable number, because it can be changed into a prime (212422423) 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 in 3 ways as a sum of consecutive naturals, for example, 210653 + ... + 211658.

It is an arithmetic number, because the mean of its divisors is an integer number (53211312).

Almost surely, 2^212422433 is an apocalyptic number.

It is an amenable number.

212422433 is a deficient number, since it is larger than the sum of its proper divisors (422815).

212422433 is an equidigital number, since it uses as much as digits as its factorization.

212422433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422814.

The product of its digits is 2304, while the sum is 23.

The square root of 212422433 is about 14574.7189681311. The cubic root of 212422433 is about 596.6689793543.

Adding to 212422433 its reverse (334224212), we get a palindrome (546646645).

The spelling of 212422433 in words is "two hundred twelve million, four hundred twenty-two thousand, four hundred thirty-three".