30333034021 has 4 divisors (see below), whose sum is σ = 30333754252. Its totient is φ = 30332313792.

The previous prime is 30333033971. The next prime is 30333034111. The reversal of 30333034021 is 12043033303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12043033303 = 7 ⋅1720433329.

It can be written as a sum of positive squares in 2 ways, for example, as 3563493025 + 26769540996 = 59695^2 + 163614^2 .

It is a cyclic number.

It is not a de Polignac number, because 30333034021 - 2⁹ = 30333033509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30333033983 and 30333034001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30333034621) 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, 292740 + ... + 382573.

It is an arithmetic number, because the mean of its divisors is an integer number (7583438563).

Almost surely, 2^30333034021 is an apocalyptic number.

It is an amenable number.

30333034021 is a deficient number, since it is larger than the sum of its proper divisors (720231).

30333034021 is an equidigital number, since it uses as much as digits as its factorization.

30333034021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720230.

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 30333034021 its reverse (12043033303), we get a palindrome (42376067324).

The spelling of 30333034021 in words is "thirty billion, three hundred thirty-three million, thirty-four thousand, twenty-one".