30020120312221 has 8 divisors (see below), whose sum is σ = 33203126832344. Its totient is φ = 26961937577280.

The previous prime is 30020120312213. The next prime is 30020120312311. The reversal of 30020120312221 is 12221302102003.

It can be written as a sum of positive squares in 4 ways, for example, as 7685148284100 + 22334972028121 = 2772210^2 + 4725989^2 .

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 30020120312221 - 2³ = 30020120312213 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 (30020120312321) 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, 31205945790 + ... + 31205946751.

It is an arithmetic number, because the mean of its divisors is an integer number (4150390854043).

Almost surely, 2^{30020120312221} is an apocalyptic number.

It is an amenable number.

30020120312221 is a deficient number, since it is larger than the sum of its proper divisors (3183006520123).

30020120312221 is a wasteful number, since it uses less digits than its factorization.

30020120312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62411892591.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30020120312221 its reverse (12221302102003), we get a palindrome (42241422414224).

The spelling of 30020120312221 in words is "thirty trillion, twenty billion, one hundred twenty million, three hundred twelve thousand, two hundred twenty-one".