201001002011 has 4 divisors (see below), whose sum is σ = 201420628800. Its totient is φ = 200581375224.

The previous prime is 201001001987. The next prime is 201001002043. The reversal of 201001002011 is 110200100102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201001002011 - 2¹⁸ = 201000739867 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 201001002011.

It is not an unprimeable number, because it can be changed into a prime (201004002011) 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, 209812676 + ... + 209813633.

It is an arithmetic number, because the mean of its divisors is an integer number (50355157200).

Almost surely, 2^201001002011 is an apocalyptic number.

201001002011 is a deficient number, since it is larger than the sum of its proper divisors (419626789).

201001002011 is an equidigital number, since it uses as much as digits as its factorization.

201001002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419626788.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 201001002011 its reverse (110200100102), we get a palindrome (311201102113).

The spelling of 201001002011 in words is "two hundred one billion, one million, two thousand, eleven".