30010033021 has 4 divisors (see below), whose sum is σ = 30162368412. Its totient is φ = 29857697632.

The previous prime is 30010033019. The next prime is 30010033061. The reversal of 30010033021 is 12033001003.

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 29525548900 + 484484121 = 171830^2 + 22011^2 .

It is a cyclic number.

It is not a de Polignac number, because 30010033021 - 2¹ = 30010033019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30010032992 and 30010033010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30010033061) 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, 76167400 + ... + 76167793.

It is an arithmetic number, because the mean of its divisors is an integer number (7540592103).

Almost surely, 2^30010033021 is an apocalyptic number.

It is an amenable number.

30010033021 is a deficient number, since it is larger than the sum of its proper divisors (152335391).

30010033021 is a wasteful number, since it uses less digits than its factorization.

30010033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152335390.

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

Adding to 30010033021 its reverse (12033001003), we get a palindrome (42043034024).

The spelling of 30010033021 in words is "thirty billion, ten million, thirty-three thousand, twenty-one".