201001000111001 has 4 divisors (see below), whose sum is σ = 201128944733904. Its totient is φ = 200873055488100.

The previous prime is 201001000110919. The next prime is 201001000111007. The reversal of 201001000111001 is 100111000100102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201001000111001 - 2¹⁰ = 201001000109977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201001000111001.

It is not an unprimeable number, because it can be changed into a prime (201001000111007) 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, 63972309095 + ... + 63972312236.

It is an arithmetic number, because the mean of its divisors is an integer number (50282236183476).

Almost surely, 2^{201001000111001} is an apocalyptic number.

It is an amenable number.

201001000111001 is a deficient number, since it is larger than the sum of its proper divisors (127944622903).

201001000111001 is a wasteful number, since it uses less digits than its factorization.

201001000111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127944622902.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 201001000111001 its reverse (100111000100102), we get a palindrome (301112000211103).

The spelling of 201001000111001 in words is "two hundred one trillion, one billion, one hundred eleven thousand, one".