30321321101221 has 8 divisors (see below), whose sum is σ = 30438148383864. Its totient is φ = 30204546797760.

The previous prime is 30321321101219. The next prime is 30321321101237. The reversal of 30321321101221 is 12210112312303.

It can be written as a sum of positive squares in 4 ways, for example, as 6582744650596 + 23738576450625 = 2565686^2 + 4872225^2 .

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 30321321101221 - 2¹ = 30321321101219 is a prime.

It is a super-2 number, since 2×30321321101221² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30321321101192 and 30321321101201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30321321101521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12097750 + ... + 14387431.

It is an arithmetic number, because the mean of its divisors is an integer number (3804768547983).

Almost surely, 2^{30321321101221} is an apocalyptic number.

It is an amenable number.

30321321101221 is a deficient number, since it is larger than the sum of its proper divisors (116827282643).

30321321101221 is a wasteful number, since it uses less digits than its factorization.

30321321101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26489591.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 30321321101221 its reverse (12210112312303), we get a palindrome (42531433413524).

The spelling of 30321321101221 in words is "thirty trillion, three hundred twenty-one billion, three hundred twenty-one million, one hundred one thousand, two hundred twenty-one".