1330215021 has 32 divisors (see below), whose sum is σ = 2008151040. Its totient is φ = 870102000.

The previous prime is 1330215017. The next prime is 1330215037. The reversal of 1330215021 is 1205120331.

It is not a de Polignac number, because 1330215021 - 2² = 1330215017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1330214985 and 1330215003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330215011) 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 in 31 ways as a sum of consecutive naturals, for example, 336426 + ... + 340356.

It is an arithmetic number, because the mean of its divisors is an integer number (62754720).

Almost surely, 2^1330215021 is an apocalyptic number.

It is an amenable number.

1330215021 is a deficient number, since it is larger than the sum of its proper divisors (677936019).

1330215021 is a wasteful number, since it uses less digits than its factorization.

1330215021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174 (or 4168 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1330215021 is about 36472.1129220669. The cubic root of 1330215021 is about 1099.7837098158.

Adding to 1330215021 its reverse (1205120331), we get a palindrome (2535335352).

The spelling of 1330215021 in words is "one billion, three hundred thirty million, two hundred fifteen thousand, twenty-one".