201001001001 has 8 divisors (see below), whose sum is σ = 273057963840. Its totient is φ = 131472352752.

The previous prime is 201001000939. The next prime is 201001001023. The reversal of 201001001001 is 100100100102.

201001001001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201001001001 - 2¹³ = 201000992809 is a prime.

201001001001 is a modest number, since divided by 1001001 gives 201 as remainder.

It is not an unprimeable number, because it can be changed into a prime (201001001801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632078461 + ... + 632078778.

It is an arithmetic number, because the mean of its divisors is an integer number (34132245480).

Almost surely, 2^201001001001 is an apocalyptic number.

It is an amenable number.

201001001001 is a deficient number, since it is larger than the sum of its proper divisors (72056962839).

201001001001 is a wasteful number, since it uses less digits than its factorization.

201001001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264157295.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 201001001001 its reverse (100100100102), we get a palindrome (301101101103).

The spelling of 201001001001 in words is "two hundred one billion, one million, one thousand, one".