12021100001 has 8 divisors (see below), whose sum is σ = 12498095904. Its totient is φ = 11552856480.

The previous prime is 12021099997. The next prime is 12021100031. The reversal of 12021100001 is 10000112021.

12021100001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12021100001 - 2² = 12021099997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021100031) 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 7 ways as a sum of consecutive naturals, for example, 2185295 + ... + 2190788.

It is an arithmetic number, because the mean of its divisors is an integer number (1562261988).

Almost surely, 2^12021100001 is an apocalyptic number.

It is an amenable number.

12021100001 is a deficient number, since it is larger than the sum of its proper divisors (476995903).

12021100001 is an equidigital number, since it uses as much as digits as its factorization.

12021100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4376191.

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

Adding to 12021100001 its reverse (10000112021), we get a palindrome (22021212022).

It can be divided in two parts, 12021 and 100001, that multiplied together give a palindrome (1202112021).

The spelling of 12021100001 in words is "twelve billion, twenty-one million, one hundred thousand, one".