2011021111100 has 36 divisors (see below), whose sum is σ = 4364000805864. Its totient is φ = 804392777280.

The previous prime is 2011021111039. The next prime is 2011021111111. The reversal of 2011021111100 is 11111201102.

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 11 ways as a sum of consecutive naturals, for example, 5911847 + ... + 6242753.

Almost surely, 2^{2011021111100} is an apocalyptic number.

2011021111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011021111100 is an abundant number, since it is smaller than the sum of its proper divisors (2352979694764).

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

2011021111100 is a wasteful number, since it uses less digits than its factorization.

2011021111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391694 (or 391687 counting only the distinct ones).

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

Adding to 2011021111100 its reverse (11111201102), we get a palindrome (2022132312202).

The spelling of 2011021111100 in words is "two trillion, eleven billion, twenty-one million, one hundred eleven thousand, one hundred".