30010121 has 4 divisors (see below), whose sum is σ = 30068244. Its totient is φ = 29952000.

The previous prime is 30010103. The next prime is 30010159. The reversal of 30010121 is 12101003.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22934521 + 7075600 = 4789^2 + 2660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30010121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30010099 and 30010108.

It is not an unprimeable number, because it can be changed into a prime (30010021) 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, 28280 + ... + 29321.

It is an arithmetic number, because the mean of its divisors is an integer number (7517061).

Almost surely, 2^30010121 is an apocalyptic number.

It is an amenable number.

30010121 is a deficient number, since it is larger than the sum of its proper divisors (58123).

30010121 is an equidigital number, since it uses as much as digits as its factorization.

30010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58122.

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

The square root of 30010121 is about 5478.1494138075. The cubic root of 30010121 is about 310.7581892224.

Adding to 30010121 its reverse (12101003), we get a palindrome (42111124).

The spelling of 30010121 in words is "thirty million, ten thousand, one hundred twenty-one".