1330313221 has 2 divisors, whose sum is σ = 1330313222. Its totient is φ = 1330313220.

The previous prime is 1330313219. The next prime is 1330313227. The reversal of 1330313221 is 1223130331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1314425025 + 15888196 = 36255^2 + 3986^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330313221 - 2¹ = 1330313219 is a prime.

Together with 1330313219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1330313227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665156610 + 665156611.

It is an arithmetic number, because the mean of its divisors is an integer number (665156611).

Almost surely, 2^1330313221 is an apocalyptic number.

It is an amenable number.

1330313221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330313221 is an equidigital number, since it uses as much as digits as its factorization.

1330313221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1330313221 is about 36473.4591312642. The cubic root of 1330313221 is about 1099.8107721331.

Adding to 1330313221 its reverse (1223130331), we get a palindrome (2553443552).

The spelling of 1330313221 in words is "one billion, three hundred thirty million, three hundred thirteen thousand, two hundred twenty-one".