30021120211 has 4 divisors (see below), whose sum is σ = 30065465232. Its totient is φ = 29976775192.

The previous prime is 30021120203. The next prime is 30021120253. The reversal of 30021120211 is 11202112003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11202112003 = 89 ⋅125866427.

It is a cyclic number.

It is not a de Polignac number, because 30021120211 - 2³ = 30021120203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30021120191 and 30021120200.

It is not an unprimeable number, because it can be changed into a prime (30021120011) 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, 22171495 + ... + 22172848.

It is an arithmetic number, because the mean of its divisors is an integer number (7516366308).

Almost surely, 2^30021120211 is an apocalyptic number.

30021120211 is a deficient number, since it is larger than the sum of its proper divisors (44345021).

30021120211 is an equidigital number, since it uses as much as digits as its factorization.

30021120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44345020.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 30021120211 its reverse (11202112003), we get a palindrome (41223232214).

The spelling of 30021120211 in words is "thirty billion, twenty-one million, one hundred twenty thousand, two hundred eleven".