146300221 has 2 divisors, whose sum is σ = 146300222. Its totient is φ = 146300220.

The previous prime is 146300173. The next prime is 146300227. The reversal of 146300221 is 122003641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140683321 + 5616900 = 11861^2 + 2370^2 .

It is an emirp because it is prime and its reverse (122003641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146300221 - 2¹⁹ = 145775933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146300227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73150110 + 73150111.

It is an arithmetic number, because the mean of its divisors is an integer number (73150111).

Almost surely, 2^146300221 is an apocalyptic number.

It is an amenable number.

146300221 is a deficient number, since it is larger than the sum of its proper divisors (1).

146300221 is an equidigital number, since it uses as much as digits as its factorization.

146300221 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.

The square root of 146300221 is about 12095.4628270273. The cubic root of 146300221 is about 526.9244214919.

Adding to 146300221 its reverse (122003641), we get a palindrome (268303862).

The spelling of 146300221 in words is "one hundred forty-six million, three hundred thousand, two hundred twenty-one".