30102113221 has 2 divisors, whose sum is σ = 30102113222. Its totient is φ = 30102113220.

The previous prime is 30102113219. The next prime is 30102113243. The reversal of 30102113221 is 12231120103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25810029025 + 4292084196 = 160655^2 + 65514^2 .

It is a cyclic number.

It is not a de Polignac number, because 30102113221 - 2¹ = 30102113219 is a prime.

It is a super-2 number, since 2×30102113221² (a number of 22 digits) contains 22 as substring.

Together with 30102113219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 30102113195 and 30102113204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30102113201) 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 as a sum of consecutive naturals, namely, 15051056610 + 15051056611.

It is an arithmetic number, because the mean of its divisors is an integer number (15051056611).

Almost surely, 2^30102113221 is an apocalyptic number.

It is an amenable number.

30102113221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30102113221 is an equidigital number, since it uses as much as digits as its factorization.

30102113221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 30102113221 its reverse (12231120103), we get a palindrome (42333233324).

The spelling of 30102113221 in words is "thirty billion, one hundred two million, one hundred thirteen thousand, two hundred twenty-one".