2011112021111 has 8 divisors (see below), whose sum is σ = 2019962232000.
Its totient is φ = 2002265440000.
The previous prime is 2011112021099. The next prime is 2011112021153. The reversal of 2011112021111 is 1111202111102.
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 2011112021111 - 234 = 1993932151927 is a prime.
It is a super-2 number, since 2×20111120211112 (a number of 25 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2011112021161) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206111 + ... + 2016111.
It is an arithmetic number, because the mean of its divisors is an integer number (252495279000).
Almost surely, 22011112021111 is an apocalyptic number.
2011112021111 is a deficient number, since it is larger than the sum of its proper divisors (8850210889).
2011112021111 is a wasteful number, since it uses less digits than its factorization.
2011112021111 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1814889.
The product of its (nonzero) digits is 8, while the sum is 14.
Adding to 2011112021111 its reverse (1111202111102), we get a palindrome (3122314132213).
It can be divided in two parts, 201111 and 2021111, that added together give a palindrome (2222222).
The spelling of 2011112021111 in words is "two trillion, eleven billion, one hundred twelve million, twenty-one thousand, one hundred eleven".