302221001 has 2 divisors, whose sum is σ = 302221002. Its totient is φ = 302221000.

The previous prime is 302220991. The next prime is 302221013. The reversal of 302221001 is 100122203.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180096400 + 122124601 = 13420^2 + 11051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-302221001 is a prime.

It is not a weakly prime, because it can be changed into another prime (302221091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151110500 + 151110501.

It is an arithmetic number, because the mean of its divisors is an integer number (151110501).

Almost surely, 2^302221001 is an apocalyptic number.

It is an amenable number.

302221001 is a deficient number, since it is larger than the sum of its proper divisors (1).

302221001 is an equidigital number, since it uses as much as digits as its factorization.

302221001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 302221001 is about 17384.5046233708. The cubic root of 302221001 is about 671.0809024678.

Adding to 302221001 its reverse (100122203), we get a palindrome (402343204).

The spelling of 302221001 in words is "three hundred two million, two hundred twenty-one thousand, one".