12103221132001 has 4 divisors (see below), whose sum is σ = 12105532235412. Its totient is φ = 12100910028592.

The previous prime is 12103221131977. The next prime is 12103221132007. The reversal of 12103221132001 is 10023112230121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9524229238225 + 2578991893776 = 3086135^2 + 1605924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12103221132001 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 12103221132001.

It is not an unprimeable number, because it can be changed into a prime (12103221132007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1155543850 + ... + 1155554323.

It is an arithmetic number, because the mean of its divisors is an integer number (3026383058853).

Almost surely, 2^{12103221132001} is an apocalyptic number.

It is an amenable number.

12103221132001 is a deficient number, since it is larger than the sum of its proper divisors (2311103411).

12103221132001 is an equidigital number, since it uses as much as digits as its factorization.

12103221132001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311103410.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12103221132001 its reverse (10023112230121), we get a palindrome (22126333362122).

The spelling of 12103221132001 in words is "twelve trillion, one hundred three billion, two hundred twenty-one million, one hundred thirty-two thousand, one".