30000320221 has 4 divisors (see below), whose sum is σ = 30000876444. Its totient is φ = 29999764000.

The previous prime is 30000320209. The next prime is 30000320239. The reversal of 30000320221 is 12202300003.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12202300003 = 53717 ⋅227159.

It can be written as a sum of positive squares in 2 ways, for example, as 5252625625 + 24747694596 = 72475^2 + 157314^2 .

It is a cyclic number.

It is not a de Polignac number, because 30000320221 - 2⁷ = 30000320093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000320201) 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, 187330 + ... + 308371.

It is an arithmetic number, because the mean of its divisors is an integer number (7500219111).

Almost surely, 2^30000320221 is an apocalyptic number.

It is an amenable number.

30000320221 is a deficient number, since it is larger than the sum of its proper divisors (556223).

30000320221 is an equidigital number, since it uses as much as digits as its factorization.

30000320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556222.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 30000320221 its reverse (12202300003), we get a palindrome (42202620224).

The spelling of 30000320221 in words is "thirty billion, three hundred twenty thousand, two hundred twenty-one".