2001111202101 has 32 divisors (see below), whose sum is σ = 3082030414848. Its totient is φ = 1141414864640.

The previous prime is 2001111202073. The next prime is 2001111202201. The reversal of 2001111202101 is 1012021111002.

It is a cyclic number.

It is not a de Polignac number, because 2001111202101 - 2¹⁵ = 2001111169333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001111202201) 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 31 ways as a sum of consecutive naturals, for example, 27577870 + ... + 27650336.

It is an arithmetic number, because the mean of its divisors is an integer number (96313450464).

Almost surely, 2^{2001111202101} is an apocalyptic number.

It is an amenable number.

2001111202101 is a deficient number, since it is larger than the sum of its proper divisors (1080919212747).

2001111202101 is a wasteful number, since it uses less digits than its factorization.

2001111202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121721.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2001111202101 its reverse (1012021111002), we get a palindrome (3013132313103).

The spelling of 2001111202101 in words is "two trillion, one billion, one hundred eleven million, two hundred two thousand, one hundred one".