201021110201 has 4 divisors (see below), whose sum is σ = 201071206692. Its totient is φ = 200971013712.

The previous prime is 201021110197. The next prime is 201021110237. The reversal of 201021110201 is 102011120102.

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 110253882025 + 90767228176 = 332045^2 + 301276^2 .

It is a cyclic number.

It is not a de Polignac number, because 201021110201 - 2² = 201021110197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201021110291) 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, 25042226 + ... + 25050251.

It is an arithmetic number, because the mean of its divisors is an integer number (50267801673).

Almost surely, 2^201021110201 is an apocalyptic number.

It is an amenable number.

201021110201 is a deficient number, since it is larger than the sum of its proper divisors (50096491).

201021110201 is an equidigital number, since it uses as much as digits as its factorization.

201021110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50096490.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201021110201 its reverse (102011120102), we get a palindrome (303032230303).

Subtracting from 201021110201 its reverse (102011120102), we obtain a palindrome (99009990099).

The spelling of 201021110201 in words is "two hundred one billion, twenty-one million, one hundred ten thousand, two hundred one".