230312222221 has 2 divisors, whose sum is σ = 230312222222. Its totient is φ = 230312222220.

The previous prime is 230312222219. The next prime is 230312222237. The reversal of 230312222221 is 122222213032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160412265225 + 69899956996 = 400515^2 + 264386^2 .

It is a cyclic number.

It is not a de Polignac number, because 230312222221 - 2¹ = 230312222219 is a prime.

Together with 230312222219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 230312222192 and 230312222201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230312222251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115156111110 + 115156111111.

It is an arithmetic number, because the mean of its divisors is an integer number (115156111111).

Almost surely, 2^230312222221 is an apocalyptic number.

It is an amenable number.

230312222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

230312222221 is an equidigital number, since it uses as much as digits as its factorization.

230312222221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 230312222221 its reverse (122222213032), we get a palindrome (352534435253).

The spelling of 230312222221 in words is "two hundred thirty billion, three hundred twelve million, two hundred twenty-two thousand, two hundred twenty-one".