30221323221 has 16 divisors (see below), whose sum is σ = 42444497600. Its totient is φ = 19074279168.

The previous prime is 30221323207. The next prime is 30221323241. The reversal of 30221323221 is 12232312203.

It is a happy number.

It is not a de Polignac number, because 30221323221 - 2⁹ = 30221322709 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 (30221323241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93166 + ... + 262911.

It is an arithmetic number, because the mean of its divisors is an integer number (2652781100).

Almost surely, 2^30221323221 is an apocalyptic number.

It is an amenable number.

30221323221 is a deficient number, since it is larger than the sum of its proper divisors (12223174379).

30221323221 is a wasteful number, since it uses less digits than its factorization.

30221323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357588.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 30221323221 its reverse (12232312203), we get a palindrome (42453635424).

The spelling of 30221323221 in words is "thirty billion, two hundred twenty-one million, three hundred twenty-three thousand, two hundred twenty-one".