212321233 has 8 divisors (see below), whose sum is σ = 216691200. Its totient is φ = 207964848.

The previous prime is 212321203. The next prime is 212321261. The reversal of 212321233 is 332123212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212321233 - 2⁹ = 212320721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212321233.

It is not an unprimeable number, because it can be changed into a prime (212321203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31888 + ... + 37966.

It is an arithmetic number, because the mean of its divisors is an integer number (27086400).

Almost surely, 2^212321233 is an apocalyptic number.

It is an amenable number.

212321233 is a deficient number, since it is larger than the sum of its proper divisors (4369967).

212321233 is an equidigital number, since it uses as much as digits as its factorization.

212321233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6791.

The product of its digits is 432, while the sum is 19.

The square root of 212321233 is about 14571.2467894824. The cubic root of 212321233 is about 596.5742114408.

Adding to 212321233 its reverse (332123212), we get a palindrome (544444445).

The spelling of 212321233 in words is "two hundred twelve million, three hundred twenty-one thousand, two hundred thirty-three".