12001021103 has 4 divisors (see below), whose sum is σ = 12388150848. Its totient is φ = 11613891360.

The previous prime is 12001021079. The next prime is 12001021127. The reversal of 12001021103 is 30112010021.

12001021103 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.

It is an interprime number because it is at equal distance from previous prime (12001021079) and next prime (12001021127).

It is a cyclic number.

It is not a de Polignac number, because 12001021103 - 2¹⁶ = 12000955567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001021303) 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, 193564826 + ... + 193564887.

It is an arithmetic number, because the mean of its divisors is an integer number (3097037712).

Almost surely, 2^12001021103 is an apocalyptic number.

12001021103 is a deficient number, since it is larger than the sum of its proper divisors (387129745).

12001021103 is an equidigital number, since it uses as much as digits as its factorization.

12001021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387129744.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 12001021103 its reverse (30112010021), we get a palindrome (42113031124).

The spelling of 12001021103 in words is "twelve billion, one million, twenty-one thousand, one hundred three".