201001100001201 has 96 divisors (see below), whose sum is σ = 295031716761600. Its totient is φ = 131856974592000.

The previous prime is 201001100001193. The next prime is 201001100001239. The reversal of 201001100001201 is 102100001100102.

It is a happy number.

It is not a de Polignac number, because 201001100001201 - 2³ = 201001100001193 is a prime.

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 (201001100001001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 71760477001 + ... + 71760479801.

It is an arithmetic number, because the mean of its divisors is an integer number (3073247049600).

Almost surely, 2^{201001100001201} is an apocalyptic number.

It is an amenable number.

201001100001201 is a deficient number, since it is larger than the sum of its proper divisors (94030616760399).

201001100001201 is a wasteful number, since it uses less digits than its factorization.

201001100001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4207 (or 4204 counting only the distinct ones).

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

Adding to 201001100001201 its reverse (102100001100102), we get a palindrome (303101101101303).

The spelling of 201001100001201 in words is "two hundred one trillion, one billion, one hundred million, one thousand, two hundred one".