30120211 has 4 divisors (see below), whose sum is σ = 32858424. Its totient is φ = 27382000.

The previous prime is 30120203. The next prime is 30120217. The reversal of 30120211 is 11202103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30120211 - 2³ = 30120203 is a prime.

It is a super-2 number, since 2×30120211² = 1814454221369042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30120217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1369090 + ... + 1369111.

It is an arithmetic number, because the mean of its divisors is an integer number (8214606).

Almost surely, 2^30120211 is an apocalyptic number.

30120211 is a deficient number, since it is larger than the sum of its proper divisors (2738213).

30120211 is a wasteful number, since it uses less digits than its factorization.

30120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738212.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 30120211 is about 5488.1883167399. The cubic root of 30120211 is about 311.1377236258.

Adding to 30120211 its reverse (11202103), we get a palindrome (41322314).

The spelling of 30120211 in words is "thirty million, one hundred twenty thousand, two hundred eleven".