30530051363221 has 4 divisors (see below), whose sum is σ = 30531202902252. Its totient is φ = 30528899824192.

The previous prime is 30530051363183. The next prime is 30530051363243. The reversal of 30530051363221 is 12236315003503.

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 15476466152196 + 15053585211025 = 3934014^2 + 3879895^2 .

It is a cyclic number.

It is not a de Polignac number, because 30530051363221 - 2⁷ = 30530051363093 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 (30530051363821) 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, 575729746 + ... + 575782771.

It is an arithmetic number, because the mean of its divisors is an integer number (7632800725563).

Almost surely, 2^{30530051363221} is an apocalyptic number.

It is an amenable number.

30530051363221 is a deficient number, since it is larger than the sum of its proper divisors (1151539031).

30530051363221 is a wasteful number, since it uses less digits than its factorization.

30530051363221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151539030.

The product of its (nonzero) digits is 48600, while the sum is 34.

Adding to 30530051363221 its reverse (12236315003503), we get a palindrome (42766366366724).

The spelling of 30530051363221 in words is "thirty trillion, five hundred thirty billion, fifty-one million, three hundred sixty-three thousand, two hundred twenty-one".