201021002201 has 4 divisors (see below), whose sum is σ = 201021985332. Its totient is φ = 201020019072.

The previous prime is 201021002173. The next prime is 201021002227. The reversal of 201021002201 is 102200120102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 91234806601 + 109786195600 = 302051^2 + 331340^2 .

It is a cyclic number.

It is not a de Polignac number, because 201021002201 - 2⁶ = 201021002137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201021002251) 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, 56516 + ... + 636581.

It is an arithmetic number, because the mean of its divisors is an integer number (50255496333).

Almost surely, 2^201021002201 is an apocalyptic number.

It is an amenable number.

201021002201 is a deficient number, since it is larger than the sum of its proper divisors (983131).

201021002201 is an equidigital number, since it uses as much as digits as its factorization.

201021002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983130.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201021002201 its reverse (102200120102), we get a palindrome (303221122303).

The spelling of 201021002201 in words is "two hundred one billion, twenty-one million, two thousand, two hundred one".