30001213321 has 4 divisors (see below), whose sum is σ = 30001559812. Its totient is φ = 30000866832.

The previous prime is 30001213259. The next prime is 30001213381. The reversal of 30001213321 is 12331210003.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4059601225 + 25941612096 = 63715^2 + 161064^2 .

It is a cyclic number.

It is not a de Polignac number, because 30001213321 - 2⁹ = 30001212809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30001213295 and 30001213304.

It is not an unprimeable number, because it can be changed into a prime (30001213381) 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, 81295 + ... + 258091.

It is an arithmetic number, because the mean of its divisors is an integer number (7500389953).

Almost surely, 2^30001213321 is an apocalyptic number.

It is an amenable number.

30001213321 is a deficient number, since it is larger than the sum of its proper divisors (346491).

30001213321 is a wasteful number, since it uses less digits than its factorization.

30001213321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346490.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30001213321 its reverse (12331210003), we get a palindrome (42332423324).

The spelling of 30001213321 in words is "thirty billion, one million, two hundred thirteen thousand, three hundred twenty-one".