1021330001 has 2 divisors, whose sum is σ = 1021330002. Its totient is φ = 1021330000.

The previous prime is 1021329997. The next prime is 1021330039. The reversal of 1021330001 is 1000331201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 751582225 + 269747776 = 27415^2 + 16424^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021330001 - 2² = 1021329997 is a prime.

It is a super-2 number, since 2×1021330001² = 2086229941885320002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1021330081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510665000 + 510665001.

It is an arithmetic number, because the mean of its divisors is an integer number (510665001).

Almost surely, 2^1021330001 is an apocalyptic number.

It is an amenable number.

1021330001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021330001 is an equidigital number, since it uses as much as digits as its factorization.

1021330001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1021330001 is about 31958.2540355383. The cubic root of 1021330001 is about 1007.0600388837.

Adding to 1021330001 its reverse (1000331201), we get a palindrome (2021661202).

The spelling of 1021330001 in words is "one billion, twenty-one million, three hundred thirty thousand, one".