2230212221 has 4 divisors (see below), whose sum is σ = 2230308444. Its totient is φ = 2230116000.

The previous prime is 2230212203. The next prime is 2230212233. The reversal of 2230212221 is 1222120322.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 101404900 + 2128807321 = 10070^2 + 46139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2230212221 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 2230212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2230212421) 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, 10271 + ... + 67571.

It is an arithmetic number, because the mean of its divisors is an integer number (557577111).

Almost surely, 2^2230212221 is an apocalyptic number.

It is an amenable number.

2230212221 is a deficient number, since it is larger than the sum of its proper divisors (96223).

2230212221 is an equidigital number, since it uses as much as digits as its factorization.

2230212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96222.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2230212221 is about 47225.1227737949. The cubic root of 2230212221 is about 1306.5179990673.

Adding to 2230212221 its reverse (1222120322), we get a palindrome (3452332543).

The spelling of 2230212221 in words is "two billion, two hundred thirty million, two hundred twelve thousand, two hundred twenty-one".