30221010330221 has 4 divisors (see below), whose sum is σ = 31998716820252. Its totient is φ = 28443303840192.

The previous prime is 30221010330169. The next prime is 30221010330257. The reversal of 30221010330221 is 12203301012203.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18393505225225 + 11827505104996 = 4288765^2 + 3439114^2 .

It is a cyclic number.

It is not a de Polignac number, because 30221010330221 - 2⁶ = 30221010330157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30221010330193 and 30221010330202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221010333221) 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, 888853244990 + ... + 888853245023.

It is an arithmetic number, because the mean of its divisors is an integer number (7999679205063).

Almost surely, 2^{30221010330221} is an apocalyptic number.

It is an amenable number.

30221010330221 is a deficient number, since it is larger than the sum of its proper divisors (1777706490031).

30221010330221 is a wasteful number, since it uses less digits than its factorization.

30221010330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777706490030.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30221010330221 its reverse (12203301012203), we get a palindrome (42424311342424).

The spelling of 30221010330221 in words is "thirty trillion, two hundred twenty-one billion, ten million, three hundred thirty thousand, two hundred twenty-one".