212232302321 has 4 divisors (see below), whose sum is σ = 228557864052. Its totient is φ = 195906740592.

The previous prime is 212232302299. The next prime is 212232302323. The reversal of 212232302321 is 123203232212.

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 23062978225 + 189169324096 = 151865^2 + 434936^2 .

It is a cyclic number.

It is not a de Polignac number, because 212232302321 - 2³⁰ = 211158560497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212232302323) 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, 8162780846 + ... + 8162780871.

It is an arithmetic number, because the mean of its divisors is an integer number (57139466013).

Almost surely, 2^212232302321 is an apocalyptic number.

It is an amenable number.

212232302321 is a deficient number, since it is larger than the sum of its proper divisors (16325561731).

212232302321 is a wasteful number, since it uses less digits than its factorization.

212232302321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16325561730.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 212232302321 its reverse (123203232212), we get a palindrome (335435534533).

The spelling of 212232302321 in words is "two hundred twelve billion, two hundred thirty-two million, three hundred two thousand, three hundred twenty-one".