201000201101001 has 12 divisors (see below), whose sum is σ = 299699224581120. Its totient is φ = 129677549097240.

The previous prime is 201000201100987. The next prime is 201000201101003. The reversal of 201000201101001 is 100101102000102.

It is a happy number.

201000201101001 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201000201101001 - 2¹³ = 201000201092809 is a prime.

It is a super-2 number, since 2×201000201101001² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (201000201101003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 360215413881 + ... + 360215414438.

It is an arithmetic number, because the mean of its divisors is an integer number (24974935381760).

Almost surely, 2^{201000201101001} is an apocalyptic number.

It is an amenable number.

201000201101001 is a deficient number, since it is larger than the sum of its proper divisors (98699023480119).

201000201101001 is a wasteful number, since it uses less digits than its factorization.

201000201101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720430828356 (or 720430828353 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 201000201101001 its reverse (100101102000102), we get a palindrome (301101303101103).

The spelling of 201000201101001 in words is "two hundred one trillion, two hundred one million, one hundred one thousand, one".