30211323221 has 8 divisors (see below), whose sum is σ = 30276061464. Its totient is φ = 30146618880.

The previous prime is 30211323167. The next prime is 30211323223. The reversal of 30211323221 is 12232311203.

It can be written as a sum of positive squares in 4 ways, for example, as 4213308100 + 25998015121 = 64910^2 + 161239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30211323221 - 2¹⁸ = 30211061077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30211323193 and 30211323202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30211323223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2600201 + ... + 2611793.

It is an arithmetic number, because the mean of its divisors is an integer number (3784507683).

Almost surely, 2^30211323221 is an apocalyptic number.

It is an amenable number.

30211323221 is a deficient number, since it is larger than the sum of its proper divisors (64738243).

30211323221 is a wasteful number, since it uses less digits than its factorization.

30211323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16951.

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

Adding to 30211323221 its reverse (12232311203), we get a palindrome (42443634424).

The spelling of 30211323221 in words is "thirty billion, two hundred eleven million, three hundred twenty-three thousand, two hundred twenty-one".