2001321002201 has 4 divisors (see below), whose sum is σ = 2004175954404. Its totient is φ = 1998466050000.

The previous prime is 2001321002183. The next prime is 2001321002203. The reversal of 2001321002201 is 1022001231002.

It is a happy number.

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 719163361225 + 1282157640976 = 848035^2 + 1132324^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001321002201 - 2³⁰ = 2000247260377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001321002203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427475050 + ... + 1427476451.

It is an arithmetic number, because the mean of its divisors is an integer number (501043988601).

Almost surely, 2^{2001321002201} is an apocalyptic number.

It is an amenable number.

2001321002201 is a deficient number, since it is larger than the sum of its proper divisors (2854952203).

2001321002201 is an equidigital number, since it uses as much as digits as its factorization.

2001321002201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854952202.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2001321002201 its reverse (1022001231002), we get a palindrome (3023322233203).

The spelling of 2001321002201 in words is "two trillion, one billion, three hundred twenty-one million, two thousand, two hundred one".