230072221 has 2 divisors, whose sum is σ = 230072222. Its totient is φ = 230072220.

The previous prime is 230072201. The next prime is 230072257. The reversal of 230072221 is 122270032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182655225 + 47416996 = 13515^2 + 6886^2 .

It is a cyclic number.

It is not a de Polignac number, because 230072221 - 2¹⁹ = 229547933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230072201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115036110 + 115036111.

It is an arithmetic number, because the mean of its divisors is an integer number (115036111).

Almost surely, 2^230072221 is an apocalyptic number.

It is an amenable number.

230072221 is a deficient number, since it is larger than the sum of its proper divisors (1).

230072221 is an equidigital number, since it uses as much as digits as its factorization.

230072221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 230072221 is about 15168.1317570754. The cubic root of 230072221 is about 612.7566901884.

The spelling of 230072221 in words is "two hundred thirty million, seventy-two thousand, two hundred twenty-one".