1330203421 has 2 divisors, whose sum is σ = 1330203422. Its totient is φ = 1330203420.

The previous prime is 1330203383. The next prime is 1330203443. The reversal of 1330203421 is 1243020331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 974126521 + 356076900 = 31211^2 + 18870^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330203421 - 2¹¹ = 1330201373 is a prime.

It is a super-2 number, since 2×1330203421² = 3538882282480206482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1330203481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665101710 + 665101711.

It is an arithmetic number, because the mean of its divisors is an integer number (665101711).

Almost surely, 2^1330203421 is an apocalyptic number.

It is an amenable number.

1330203421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330203421 is an equidigital number, since it uses as much as digits as its factorization.

1330203421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1330203421 is about 36471.9538961104. The cubic root of 1330203421 is about 1099.7805129572.

Adding to 1330203421 its reverse (1243020331), we get a palindrome (2573223752).

The spelling of 1330203421 in words is "one billion, three hundred thirty million, two hundred three thousand, four hundred twenty-one".