1021330055 has 8 divisors (see below), whose sum is σ = 1258720512. Its totient is φ = 794981088.

The previous prime is 1021330039. The next prime is 1021330073. The reversal of 1021330055 is 5500331201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021330055 - 2⁴ = 1021330039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2760167 + ... + 2760536.

It is an arithmetic number, because the mean of its divisors is an integer number (157340064).

Almost surely, 2^1021330055 is an apocalyptic number.

1021330055 is a deficient number, since it is larger than the sum of its proper divisors (237390457).

1021330055 is an equidigital number, since it uses as much as digits as its factorization.

1021330055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5520745.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 1021330055 is about 31958.2548803904. The cubic root of 1021330055 is about 1007.0600566323.

Adding to 1021330055 its reverse (5500331201), we get a palindrome (6521661256).

The spelling of 1021330055 in words is "one billion, twenty-one million, three hundred thirty thousand, fifty-five".