30243231021221 has 8 divisors (see below), whose sum is σ = 30280370556120. Its totient is φ = 30206093073408.

The previous prime is 30243231021187. The next prime is 30243231021277. The reversal of 30243231021221 is 12212013234203.

It can be written as a sum of positive squares in 4 ways, for example, as 18697581364900 + 11545649656321 = 4324070^2 + 3397889^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30243231021221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30243231021121) 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, 40296425 + ... + 41040081.

It is an arithmetic number, because the mean of its divisors is an integer number (3785046319515).

Almost surely, 2^{30243231021221} is an apocalyptic number.

It is an amenable number.

30243231021221 is a deficient number, since it is larger than the sum of its proper divisors (37139534899).

30243231021221 is an equidigital number, since it uses as much as digits as its factorization.

30243231021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793543.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 30243231021221 its reverse (12212013234203), we get a palindrome (42455244255424).

The spelling of 30243231021221 in words is "thirty trillion, two hundred forty-three billion, two hundred thirty-one million, twenty-one thousand, two hundred twenty-one".