12011002001 has 4 divisors (see below), whose sum is σ = 12033968112. Its totient is φ = 11988035892.

The previous prime is 12011001983. The next prime is 12011002067. The reversal of 12011002001 is 10020011021.

12011002001 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: 10020011021 = 17 ⋅589412413.

It is a cyclic number.

It is not a de Polignac number, because 12011002001 - 2¹⁰ = 12011000977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12011002001.

It is not an unprimeable number, because it can be changed into a prime (12011002501) 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, 11482271 + ... + 11483316.

It is an arithmetic number, because the mean of its divisors is an integer number (3008492028).

Almost surely, 2^12011002001 is an apocalyptic number.

It is an amenable number.

12011002001 is a deficient number, since it is larger than the sum of its proper divisors (22966111).

12011002001 is an equidigital number, since it uses as much as digits as its factorization.

12011002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22966110.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12011002001 its reverse (10020011021), we get a palindrome (22031013022).

The spelling of 12011002001 in words is "twelve billion, eleven million, two thousand, one".