30320210213021 has 4 divisors (see below), whose sum is σ = 30331239757500. Its totient is φ = 30309180668544.

The previous prime is 30320210213011. The next prime is 30320210213171. The reversal of 30320210213021 is 12031201202303.

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 19031188125625 + 11289022087396 = 4362475^2 + 3359914^2 .

It is a cyclic number.

It is not a de Polignac number, because 30320210213021 - 2³⁴ = 30303030343837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30320210212984 and 30320210213002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30320210213011) 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, 5514768116 + ... + 5514773613.

It is an arithmetic number, because the mean of its divisors is an integer number (7582809939375).

Almost surely, 2^{30320210213021} is an apocalyptic number.

It is an amenable number.

30320210213021 is a deficient number, since it is larger than the sum of its proper divisors (11029544479).

30320210213021 is a wasteful number, since it uses less digits than its factorization.

30320210213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11029544478.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30320210213021 its reverse (12031201202303), we get a palindrome (42351411415324).

The spelling of 30320210213021 in words is "thirty trillion, three hundred twenty billion, two hundred ten million, two hundred thirteen thousand, twenty-one".