212223233 has 4 divisors (see below), whose sum is σ = 213647700. Its totient is φ = 210798768.

The previous prime is 212223227. The next prime is 212223269. The reversal of 212223233 is 332322212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11235904 + 200987329 = 3352^2 + 14177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212223233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212223133) 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, 712010 + ... + 712307.

It is an arithmetic number, because the mean of its divisors is an integer number (53411925).

Almost surely, 2^212223233 is an apocalyptic number.

It is an amenable number.

212223233 is a deficient number, since it is larger than the sum of its proper divisors (1424467).

212223233 is a wasteful number, since it uses less digits than its factorization.

212223233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424466.

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

The square root of 212223233 is about 14567.8836143072. The cubic root of 212223233 is about 596.4824114369.

Adding to 212223233 its reverse (332322212), we get a palindrome (544545445).

The spelling of 212223233 in words is "two hundred twelve million, two hundred twenty-three thousand, two hundred thirty-three".