2001111021101 has 8 divisors (see below), whose sum is σ = 2055040731744. Its totient is φ = 1947517321680.

The previous prime is 2001111021097. The next prime is 2001111021209. The reversal of 2001111021101 is 1011201111002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001111021101 - 2² = 2001111021097 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 (2001111027101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83990735 + ... + 84014556.

It is an arithmetic number, because the mean of its divisors is an integer number (256880091468).

Almost surely, 2^{2001111021101} is an apocalyptic number.

It is an amenable number.

2001111021101 is a deficient number, since it is larger than the sum of its proper divisors (53929710643).

2001111021101 is a wasteful number, since it uses less digits than its factorization.

2001111021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168005611.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 2001111021101 its reverse (1011201111002), we get a palindrome (3012312132103).

The spelling of 2001111021101 in words is "two trillion, one billion, one hundred eleven million, twenty-one thousand, one hundred one".