30113221 has 2 divisors, whose sum is σ = 30113222. Its totient is φ = 30113220.

The previous prime is 30113207. The next prime is 30113231. The reversal of 30113221 is 12231103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25100100 + 5013121 = 5010^2 + 2239^2 .

It is a cyclic number.

It is not a de Polignac number, because 30113221 - 2⁵ = 30113189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30113231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15056610 + 15056611.

It is an arithmetic number, because the mean of its divisors is an integer number (15056611).

Almost surely, 2^30113221 is an apocalyptic number.

It is an amenable number.

30113221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30113221 is an equidigital number, since it uses as much as digits as its factorization.

30113221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 30113221 is about 5487.5514576175. The cubic root of 30113221 is about 311.1136531775.

Adding to 30113221 its reverse (12231103), we get a palindrome (42344324).

The spelling of 30113221 in words is "thirty million, one hundred thirteen thousand, two hundred twenty-one".