212220323 has 6 divisors (see below), whose sum is σ = 246868596. Its totient is φ = 181903092.

The previous prime is 212220313. The next prime is 212220331. The reversal of 212220323 is 323022212.

212220323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212220323 - 2⁶ = 212220259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212220313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2165465 + ... + 2165562.

It is an arithmetic number, because the mean of its divisors is an integer number (41144766).

Almost surely, 2^212220323 is an apocalyptic number.

212220323 is a deficient number, since it is larger than the sum of its proper divisors (34648273).

212220323 is an equidigital number, since it uses as much as digits as its factorization.

212220323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4331041 (or 4331034 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 212220323 is about 14567.7837367254. The cubic root of 212220323 is about 596.4796851069.

Adding to 212220323 its reverse (323022212), we get a palindrome (535242535).

The spelling of 212220323 in words is "two hundred twelve million, two hundred twenty thousand, three hundred twenty-three".