30120021001 has 4 divisors (see below), whose sum is σ = 34422881152. Its totient is φ = 25817160852.

The previous prime is 30120020989. The next prime is 30120021077. The reversal of 30120021001 is 10012002103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30120021001 - 2¹¹ = 30120018953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30120022001) 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, 2151430065 + ... + 2151430078.

It is an arithmetic number, because the mean of its divisors is an integer number (8605720288).

Almost surely, 2^30120021001 is an apocalyptic number.

It is an amenable number.

30120021001 is a deficient number, since it is larger than the sum of its proper divisors (4302860151).

30120021001 is an equidigital number, since it uses as much as digits as its factorization.

30120021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4302860150.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 30120021001 its reverse (10012002103), we get a palindrome (40132023104).

The spelling of 30120021001 in words is "thirty billion, one hundred twenty million, twenty-one thousand, one".