30130123221 has 24 divisors (see below), whose sum is σ = 49976603040. Its totient is φ = 17299591200.

The previous prime is 30130123181. The next prime is 30130123277. The reversal of 30130123221 is 12232103103.

30130123221 is a `hidden beast` number, since 301 + 30 + 12 + 322 + 1 = 666.

It is not a de Polignac number, because 30130123221 - 2¹⁸ = 30129861077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30130123194 and 30130123203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30130123421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8007190 + ... + 8010951.

It is an arithmetic number, because the mean of its divisors is an integer number (2082358460).

Almost surely, 2^30130123221 is an apocalyptic number.

It is an amenable number.

30130123221 is a deficient number, since it is larger than the sum of its proper divisors (19846479819).

30130123221 is a wasteful number, since it uses less digits than its factorization.

30130123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16018177 (or 16018174 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30130123221 its reverse (12232103103), we get a palindrome (42362226324).

It can be divided in two parts, 30130 and 123221, that added together give a palindrome (153351).

The spelling of 30130123221 in words is "thirty billion, one hundred thirty million, one hundred twenty-three thousand, two hundred twenty-one".