30313021013221 has 4 divisors (see below), whose sum is σ = 30313614610944. Its totient is φ = 30312427415500.

The previous prime is 30313021013179. The next prime is 30313021013251. The reversal of 30313021013221 is 12231012031303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30313021013221 - 2⁹ = 30313021012709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30313021013192 and 30313021013201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30313021013251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296722255 + ... + 296824396.

It is an arithmetic number, because the mean of its divisors is an integer number (7578403652736).

Almost surely, 2^{30313021013221} is an apocalyptic number.

It is an amenable number.

30313021013221 is a deficient number, since it is larger than the sum of its proper divisors (593597723).

30313021013221 is an equidigital number, since it uses as much as digits as its factorization.

30313021013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593597722.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 30313021013221 its reverse (12231012031303), we get a palindrome (42544033044524).

The spelling of 30313021013221 in words is "thirty trillion, three hundred thirteen billion, twenty-one million, thirteen thousand, two hundred twenty-one".