1330030021 has 4 divisors (see below), whose sum is σ = 1333735200. Its totient is φ = 1326324844.

The previous prime is 1330029991. The next prime is 1330030027. The reversal of 1330030021 is 1200300331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1200300331 = 797 ⋅1506023.

It is a cyclic number.

It is not a de Polignac number, because 1330030021 - 2⁵ = 1330029989 is a prime.

It is a super-2 number, since 2×1330030021² = 3537959713522520882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1330029983 and 1330030010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330030027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1852051 + ... + 1852768.

It is an arithmetic number, because the mean of its divisors is an integer number (333433800).

Almost surely, 2^1330030021 is an apocalyptic number.

It is an amenable number.

1330030021 is a deficient number, since it is larger than the sum of its proper divisors (3705179).

1330030021 is an equidigital number, since it uses as much as digits as its factorization.

1330030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3705178.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 1330030021 is about 36469.5766495856. The cubic root of 1330030021 is about 1099.7327232169.

Adding to 1330030021 its reverse (1200300331), we get a palindrome (2530330352).

The spelling of 1330030021 in words is "one billion, three hundred thirty million, thirty thousand, twenty-one".