30021231220033 has 4 divisors (see below), whose sum is σ = 31787185997700. Its totient is φ = 28255276442368.

The previous prime is 30021231220009. The next prime is 30021231220091. The reversal of 30021231220033 is 33002213212003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19891314561024 + 10129916659009 = 4459968^2 + 3182753^2 .

It is a cyclic number.

It is not a de Polignac number, because 30021231220033 - 2⁹ = 30021231219521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30021231219986 and 30021231220013.

It is not an unprimeable number, because it can be changed into a prime (30021231220333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 882977388808 + ... + 882977388841.

It is an arithmetic number, because the mean of its divisors is an integer number (7946796499425).

Almost surely, 2^{30021231220033} is an apocalyptic number.

It is an amenable number.

30021231220033 is a deficient number, since it is larger than the sum of its proper divisors (1765954777667).

30021231220033 is a wasteful number, since it uses less digits than its factorization.

30021231220033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765954777666.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 30021231220033 its reverse (33002213212003), we get a palindrome (63023444432036).

The spelling of 30021231220033 in words is "thirty trillion, twenty-one billion, two hundred thirty-one million, two hundred twenty thousand, thirty-three".