30021321033221 has 8 divisors (see below), whose sum is σ = 34310697816384. Its totient is φ = 25732098408960.

The previous prime is 30021321033173. The next prime is 30021321033271. The reversal of 30021321033221 is 12233012312003.

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 30021321033221 - 2²² = 30021316838917 is a prime.

It is a super-2 number, since 2×30021321033221² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021321033271) 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, 38122115 + ... + 38901648.

It is an arithmetic number, because the mean of its divisors is an integer number (4288837227048).

Almost surely, 2^{30021321033221} is an apocalyptic number.

It is an amenable number.

30021321033221 is a deficient number, since it is larger than the sum of its proper divisors (4289376783163).

30021321033221 is an equidigital number, since it uses as much as digits as its factorization.

30021321033221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77079451.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 30021321033221 its reverse (12233012312003), we get a palindrome (42254333345224).

The spelling of 30021321033221 in words is "thirty trillion, twenty-one billion, three hundred twenty-one million, thirty-three thousand, two hundred twenty-one".