2011111101000 has 384 divisors, whose sum is σ = 7207192792800. Its totient is φ = 504063590400.

The previous prime is 2011111100987. The next prime is 2011111101049. The reversal of 2011111101000 is 1011111102.

It can be written as a sum of positive squares in 16 ways, for example, as 18084332484 + 1993026768516 = 134478^2 + 1411746^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 117648454 + ... + 117665546.

Almost surely, 2^{2011111101000} is an apocalyptic number.

2011111101000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011111101000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3603596396400).

2011111101000 is an abundant number, since it is smaller than the sum of its proper divisors (5196081691800).

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

2011111101000 is a wasteful number, since it uses less digits than its factorization.

2011111101000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17906 (or 17889 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 2011111101000 its reverse (1011111102), we get a palindrome (2012122212102).

The spelling of 2011111101000 in words is "two trillion, eleven billion, one hundred eleven million, one hundred one thousand".