2001111211110 has 128 divisors (see below), whose sum is σ = 5515652620800. Its totient is φ = 459532984320.

The previous prime is 2001111211097. The next prime is 2001111211147. The reversal of 2001111211110 is 111121111002.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 92766406 + ... + 92787974.

It is an arithmetic number, because the mean of its divisors is an integer number (43091036100).

Almost surely, 2^{2001111211110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001111211110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2757826310400).

2001111211110 is an abundant number, since it is smaller than the sum of its proper divisors (3514541409690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001111211110 is a wasteful number, since it uses less digits than its factorization.

2001111211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36406.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 2001111211110 its reverse (111121111002), we get a palindrome (2112232322112).

The spelling of 2001111211110 in words is "two trillion, one billion, one hundred eleven million, two hundred eleven thousand, one hundred ten".