2001010010101 has 4 divisors (see below), whose sum is σ = 2001031268832. Its totient is φ = 2000988751372.

The previous prime is 2001010010047. The next prime is 2001010010107. The reversal of 2001010010101 is 1010100101002.

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 2001010010101 - 2¹⁵ = 2001009977333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001010010107) 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, 10487545 + ... + 10676638.

It is an arithmetic number, because the mean of its divisors is an integer number (500257817208).

Almost surely, 2^{2001010010101} is an apocalyptic number.

It is an amenable number.

2001010010101 is a deficient number, since it is larger than the sum of its proper divisors (21258731).

2001010010101 is an equidigital number, since it uses as much as digits as its factorization.

2001010010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21258730.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 2001010010101 its reverse (1010100101002), we get a palindrome (3011110111103).

Subtracting from 2001010010101 its reverse (1010100101002), we obtain a palindrome (990909909099).

The spelling of 2001010010101 in words is "two trillion, one billion, ten million, ten thousand, one hundred one".