201001321022101 has 4 divisors (see below), whose sum is σ = 201021071579692. Its totient is φ = 200981570464512.

The previous prime is 201001321022083. The next prime is 201001321022179. The reversal of 201001321022101 is 101220123100102.

201001321022101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 96555169410001 + 104446151612100 = 9826249^2 + 10219890^2 .

It is a cyclic number.

It is not a de Polignac number, because 201001321022101 - 2¹⁵ = 201001320989333 is a prime.

It is a super-3 number, since 3×201001321022101³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001321025101) 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, 9875263530 + ... + 9875283883.

It is an arithmetic number, because the mean of its divisors is an integer number (50255267894923).

Almost surely, 2^{201001321022101} is an apocalyptic number.

It is an amenable number.

201001321022101 is a deficient number, since it is larger than the sum of its proper divisors (19750557591).

201001321022101 is a wasteful number, since it uses less digits than its factorization.

201001321022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19750557590.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 201001321022101 its reverse (101220123100102), we get a palindrome (302221444122203).

The spelling of 201001321022101 in words is "two hundred one trillion, one billion, three hundred twenty-one million, twenty-two thousand, one hundred one".