230120231221 has 2 divisors, whose sum is σ = 230120231222. Its totient is φ = 230120231220.

The previous prime is 230120231219. The next prime is 230120231291. The reversal of 230120231221 is 122132021032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229809978225 + 310252996 = 479385^2 + 17614^2 .

It is a cyclic number.

It is not a de Polignac number, because 230120231221 - 2¹ = 230120231219 is a prime.

Together with 230120231219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230120231291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115060115610 + 115060115611.

It is an arithmetic number, because the mean of its divisors is an integer number (115060115611).

Almost surely, 2^230120231221 is an apocalyptic number.

It is an amenable number.

230120231221 is a deficient number, since it is larger than the sum of its proper divisors (1).

230120231221 is an equidigital number, since it uses as much as digits as its factorization.

230120231221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 230120231221 its reverse (122132021032), we get a palindrome (352252252253).

The spelling of 230120231221 in words is "two hundred thirty billion, one hundred twenty million, two hundred thirty-one thousand, two hundred twenty-one".