30012103221 has 4 divisors (see below), whose sum is σ = 40016137632. Its totient is φ = 20008068812.

The previous prime is 30012103193. The next prime is 30012103249. The reversal of 30012103221 is 12230121003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12230121003 = 3 ⋅4076707001.

It is an interprime number because it is at equal distance from previous prime (30012103193) and next prime (30012103249).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30012103221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30012103221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30012103621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5002017201 + ... + 5002017206.

It is an arithmetic number, because the mean of its divisors is an integer number (10004034408).

Almost surely, 2^30012103221 is an apocalyptic number.

It is an amenable number.

30012103221 is a deficient number, since it is larger than the sum of its proper divisors (10004034411).

30012103221 is a wasteful number, since it uses less digits than its factorization.

30012103221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10004034410.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 30012103221 its reverse (12230121003), we get a palindrome (42242224224).

The spelling of 30012103221 in words is "thirty billion, twelve million, one hundred three thousand, two hundred twenty-one".