30211121 has 16 divisors (see below), whose sum is σ = 33436800. Its totient is φ = 27168768.

The previous prime is 30211117. The next prime is 30211147. The reversal of 30211121 is 12111203.

It is a cyclic number.

It is not a de Polignac number, because 30211121 - 2² = 30211117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30211151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112175 + ... + 112443.

It is an arithmetic number, because the mean of its divisors is an integer number (2089800).

Almost surely, 2^30211121 is an apocalyptic number.

It is an amenable number.

30211121 is a deficient number, since it is larger than the sum of its proper divisors (3225679).

30211121 is a wasteful number, since it uses less digits than its factorization.

30211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 30211121 is about 5496.4644090542. The cubic root of 30211121 is about 311.4504385730.

Adding to 30211121 its reverse (12111203), we get a palindrome (42322324).

The spelling of 30211121 in words is "thirty million, two hundred eleven thousand, one hundred twenty-one".