30013212122221 has 8 divisors (see below), whose sum is σ = 31778793890424. Its totient is φ = 28247641320960.

The previous prime is 30013212122219. The next prime is 30013212122239. The reversal of 30013212122221 is 12222121231003.

It can be written as a sum of positive squares in 4 ways, for example, as 2657402500 + 30010554719721 = 51550^2 + 5478189^2 .

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 30013212122221 - 2¹ = 30013212122219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30013212122192 and 30013212122201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30013212122251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3269191 + ... + 8409163.

It is an arithmetic number, because the mean of its divisors is an integer number (3972349236303).

Almost surely, 2^{30013212122221} is an apocalyptic number.

It is an amenable number.

30013212122221 is a deficient number, since it is larger than the sum of its proper divisors (1765581768203).

30013212122221 is a wasteful number, since it uses less digits than its factorization.

30013212122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483471.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 30013212122221 its reverse (12222121231003), we get a palindrome (42235333353224).

The spelling of 30013212122221 in words is "thirty trillion, thirteen billion, two hundred twelve million, one hundred twenty-two thousand, two hundred twenty-one".