30121100 has 18 divisors (see below), whose sum is σ = 65363004. Its totient is φ = 12048400.

The previous prime is 30121097. The next prime is 30121151. The reversal of 30121100 is 112103.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 150506 + ... + 150705.

It is an arithmetic number, because the mean of its divisors is an integer number (3631278).

Almost surely, 2^30121100 is an apocalyptic number.

It is an amenable number.

30121100 is an abundant number, since it is smaller than the sum of its proper divisors (35241904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30121100 is a wasteful number, since it uses less digits than its factorization.

30121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301225 (or 301218 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 30121100 is about 5488.2693082610. The cubic root of 30121100 is about 311.1407846791.

Adding to 30121100 its reverse (112103), we get a palindrome (30233203).

The spelling of 30121100 in words is "thirty million, one hundred twenty-one thousand, one hundred".