1002030221 has 2 divisors, whose sum is σ = 1002030222. Its totient is φ = 1002030220.

The previous prime is 1002030209. The next prime is 1002030241. The reversal of 1002030221 is 1220302001.

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., 811452196 + 190578025 = 28486^2 + 13805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002030221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002030241) 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, 501015110 + 501015111.

It is an arithmetic number, because the mean of its divisors is an integer number (501015111).

Almost surely, 2^1002030221 is an apocalyptic number.

It is an amenable number.

1002030221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002030221 is an equidigital number, since it uses as much as digits as its factorization.

1002030221 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 1002030221 is about 31654.8609379350. The cubic root of 1002030221 is about 1000.6762828717.

Adding to 1002030221 its reverse (1220302001), we get a palindrome (2222332222).

The spelling of 1002030221 in words is "one billion, two million, thirty thousand, two hundred twenty-one".