201110001001001 has 4 divisors (see below), whose sum is σ = 201110039048832. Its totient is φ = 201109962953172.

The previous prime is 201110001000959. The next prime is 201110001001003. The reversal of 201110001001001 is 100100100011102.

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 201110001001001 - 2³⁸ = 200835123094057 is a prime.

It is a Duffinian number.

201110001001001 is a modest number, since divided by 1001001 gives 201110 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 201110001001001.

It is not an unprimeable number, because it can be changed into a prime (201110001001003) 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, 9509045 + ... + 22195538.

It is an arithmetic number, because the mean of its divisors is an integer number (50277509762208).

Almost surely, 2^{201110001001001} is an apocalyptic number.

It is an amenable number.

201110001001001 is a deficient number, since it is larger than the sum of its proper divisors (38047831).

201110001001001 is an equidigital number, since it uses as much as digits as its factorization.

201110001001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38047830.

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

Adding to 201110001001001 its reverse (100100100011102), we get a palindrome (301210101012103).

The spelling of 201110001001001 in words is "two hundred one trillion, one hundred ten billion, one million, one thousand, one".