30221210210321 has 32 divisors (see below), whose sum is σ = 32952957317280. Its totient is φ = 27549357244416.

The previous prime is 30221210210297. The next prime is 30221210210381. The reversal of 30221210210321 is 12301201212203.

It can be written as a sum of positive squares in 16 ways, for example, as 28500233550721 + 1720976659600 = 5338561^2 + 1311860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30221210210321 is a prime.

It is a super-2 number, since 2×30221210210321² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30221210210293 and 30221210210302.

It is not an unprimeable number, because it can be changed into a prime (30221210210381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1727213645 + ... + 1727231141.

It is an arithmetic number, because the mean of its divisors is an integer number (1029779916165).

Almost surely, 2^{30221210210321} is an apocalyptic number.

It is an amenable number.

30221210210321 is a deficient number, since it is larger than the sum of its proper divisors (2731747106959).

30221210210321 is a wasteful number, since it uses less digits than its factorization.

30221210210321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21573.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 30221210210321 its reverse (12301201212203), we get a palindrome (42522411422524).

The spelling of 30221210210321 in words is "thirty trillion, two hundred twenty-one billion, two hundred ten million, two hundred ten thousand, three hundred twenty-one".