201002102221001 has 4 divisors (see below), whose sum is σ = 201002348276100. Its totient is φ = 201001856165904.

The previous prime is 201002102220967. The next prime is 201002102221021. The reversal of 201002102221001 is 100122201200102.

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 182727537405625 + 18274564815376 = 13517675^2 + 4274876^2 .

It is a cyclic number.

It is not a de Polignac number, because 201002102221001 - 2¹⁰ = 201002102219977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201002102221021) 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, 121798106 + ... + 123437363.

It is an arithmetic number, because the mean of its divisors is an integer number (50250587069025).

Almost surely, 2^{201002102221001} is an apocalyptic number.

It is an amenable number.

201002102221001 is a deficient number, since it is larger than the sum of its proper divisors (246055099).

201002102221001 is an equidigital number, since it uses as much as digits as its factorization.

201002102221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246055098.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201002102221001 its reverse (100122201200102), we get a palindrome (301124303421103).

The spelling of 201002102221001 in words is "two hundred one trillion, two billion, one hundred two million, two hundred twenty-one thousand, one".