12000001021201 has 4 divisors (see below), whose sum is σ = 12000014218804. Its totient is φ = 11999987823600.

The previous prime is 12000001021181. The next prime is 12000001021207. The reversal of 12000001021201 is 10212010000021.

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 8473041900801 + 3526959120400 = 2910849^2 + 1878020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12000001021201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12000001021207) 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, 5125230 + ... + 7089991.

It is an arithmetic number, because the mean of its divisors is an integer number (3000003554701).

Almost surely, 2^{12000001021201} is an apocalyptic number.

It is an amenable number.

12000001021201 is a deficient number, since it is larger than the sum of its proper divisors (13197603).

12000001021201 is an equidigital number, since it uses as much as digits as its factorization.

12000001021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13197602.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12000001021201 its reverse (10212010000021), we get a palindrome (22212011021222).

The spelling of 12000001021201 in words is "twelve trillion, one million, twenty-one thousand, two hundred one".