30121330 has 16 divisors (see below), whose sum is σ = 55684440. Its totient is φ = 11722752.

The previous prime is 30121321. The next prime is 30121349. The reversal of 30121330 is 3312103.

It can be written as a sum of positive squares in 4 ways, for example, as 27342441 + 2778889 = 5229^2 + 1667^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30121330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40335 + ... + 41074.

Almost surely, 2^30121330 is an apocalyptic number.

30121330 is a deficient number, since it is larger than the sum of its proper divisors (25563110).

30121330 is a wasteful number, since it uses less digits than its factorization.

30121330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81453.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 30121330 is about 5488.2902620033. The cubic root of 30121330 is about 311.1415766179.

Adding to 30121330 its reverse (3312103), we get a palindrome (33433433).

The spelling of 30121330 in words is "thirty million, one hundred twenty-one thousand, three hundred thirty".