201321203201 has 4 divisors (see below), whose sum is σ = 201380610900. Its totient is φ = 201261795504.

The previous prime is 201321203141. The next prime is 201321203261. The reversal of 201321203201 is 102302123102.

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 (201321203141) and next prime (201321203261).

It can be written as a sum of positive squares in 2 ways, for example, as 88054627600 + 113266575601 = 296740^2 + 336551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201321203201 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 201321203201.

It is not an unprimeable number, because it can be changed into a prime (201321203261) 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, 29698766 + ... + 29705543.

It is an arithmetic number, because the mean of its divisors is an integer number (50345152725).

Almost surely, 2^201321203201 is an apocalyptic number.

It is an amenable number.

201321203201 is a deficient number, since it is larger than the sum of its proper divisors (59407699).

201321203201 is an equidigital number, since it uses as much as digits as its factorization.

201321203201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59407698.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 201321203201 its reverse (102302123102), we get a palindrome (303623326303).

The spelling of 201321203201 in words is "two hundred one billion, three hundred twenty-one million, two hundred three thousand, two hundred one".