30552242221 has 4 divisors (see below), whose sum is σ = 30648621852. Its totient is φ = 30455862592.

The previous prime is 30552242209. The next prime is 30552242251. The reversal of 30552242221 is 12224225503.

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 12256704100 + 18295538121 = 110710^2 + 135261^2 .

It is a cyclic number.

It is not a de Polignac number, because 30552242221 - 2³³ = 21962307629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30552242221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30552242251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48189340 + ... + 48189973.

It is an arithmetic number, because the mean of its divisors is an integer number (7662155463).

Almost surely, 2^30552242221 is an apocalyptic number.

It is an amenable number.

30552242221 is a deficient number, since it is larger than the sum of its proper divisors (96379631).

30552242221 is an equidigital number, since it uses as much as digits as its factorization.

30552242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96379630.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 30552242221 its reverse (12224225503), we get a palindrome (42776467724).

It can be divided in two parts, 305522 and 42221, that added together give a palindrome (347743).

The spelling of 30552242221 in words is "thirty billion, five hundred fifty-two million, two hundred forty-two thousand, two hundred twenty-one".