12020100009 has 4 divisors (see below), whose sum is σ = 16026800016. Its totient is φ = 8013400004.

The previous prime is 12020100007. The next prime is 12020100041. The reversal of 12020100009 is 90000102021.

It is a happy number.

12020100009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90000102021 = 3 ⋅30000034007.

It is a cyclic number.

It is not a de Polignac number, because 12020100009 - 2¹ = 12020100007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12020100007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003349999 + ... + 2003350004.

It is an arithmetic number, because the mean of its divisors is an integer number (4006700004).

Almost surely, 2^12020100009 is an apocalyptic number.

It is an amenable number.

12020100009 is a deficient number, since it is larger than the sum of its proper divisors (4006700007).

12020100009 is an equidigital number, since it uses as much as digits as its factorization.

12020100009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4006700006.

The product of its (nonzero) digits is 36, while the sum is 15.

The spelling of 12020100009 in words is "twelve billion, twenty million, one hundred thousand, nine".