30424220111221 has 8 divisors (see below), whose sum is σ = 30767957366040. Its totient is φ = 30080524902912.

The previous prime is 30424220111213. The next prime is 30424220111269. The reversal of 30424220111221 is 12211102242403.

It can be written as a sum of positive squares in 4 ways, for example, as 14963706207025 + 15460513904196 = 3868295^2 + 3931986^2 .

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 30424220111221 - 2³ = 30424220111213 is a prime.

It is a super-2 number, since 2×30424220111221² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30424220111521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9055150 + ... + 11951743.

It is an arithmetic number, because the mean of its divisors is an integer number (3845994670755).

Almost surely, 2^{30424220111221} is an apocalyptic number.

It is an amenable number.

30424220111221 is a deficient number, since it is larger than the sum of its proper divisors (343737254819).

30424220111221 is a wasteful number, since it uses less digits than its factorization.

30424220111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21023255.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 30424220111221 its reverse (12211102242403), we get a palindrome (42635322353624).

The spelling of 30424220111221 in words is "thirty trillion, four hundred twenty-four billion, two hundred twenty million, one hundred eleven thousand, two hundred twenty-one".