2101001110001 has 4 divisors (see below), whose sum is σ = 2119594040292. Its totient is φ = 2082408179712.

The previous prime is 2101001109997. The next prime is 2101001110007. The reversal of 2101001110001 is 1000111001012.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55526209600 + 2045474900401 = 235640^2 + 1430201^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101001110001 - 2² = 2101001109997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101001110007) 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, 9296464976 + ... + 9296465201.

It is an arithmetic number, because the mean of its divisors is an integer number (529898510073).

Almost surely, 2^{2101001110001} is an apocalyptic number.

It is an amenable number.

2101001110001 is a deficient number, since it is larger than the sum of its proper divisors (18592930291).

2101001110001 is a wasteful number, since it uses less digits than its factorization.

2101001110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18592930290.

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

Adding to 2101001110001 its reverse (1000111001012), we get a palindrome (3101112111013).

The spelling of 2101001110001 in words is "two trillion, one hundred one billion, one million, one hundred ten thousand, one".