30121133 has 6 divisors (see below), whose sum is σ = 35038926. Its totient is φ = 25818072.

The previous prime is 30121097. The next prime is 30121151. The reversal of 30121133 is 33112103.

It can be written as a sum of positive squares in only one way, i.e., 24423364 + 5697769 = 4942^2 + 2387^2 .

It is not a de Polignac number, because 30121133 - 2⁸ = 30120877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307310 + ... + 307407.

It is an arithmetic number, because the mean of its divisors is an integer number (5839821).

Almost surely, 2^30121133 is an apocalyptic number.

It is an amenable number.

30121133 is a deficient number, since it is larger than the sum of its proper divisors (4917793).

30121133 is an equidigital number, since it uses as much as digits as its factorization.

30121133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614731 (or 614724 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 30121133 is about 5488.2723146724. The cubic root of 30121133 is about 311.1408983054.

Adding to 30121133 its reverse (33112103), we get a palindrome (63233236).

The spelling of 30121133 in words is "thirty million, one hundred twenty-one thousand, one hundred thirty-three".