2011122100111 has 4 divisors (see below), whose sum is σ = 2013843511000. Its totient is φ = 2008400689224.

The previous prime is 2011122100109. The next prime is 2011122100123. The reversal of 2011122100111 is 1110012211102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2011122100111 - 2¹ = 2011122100109 is a prime.

It is a super-2 number, since 2×2011122100111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011122100091 and 2011122100100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011122106111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1360704336 + ... + 1360705813.

It is an arithmetic number, because the mean of its divisors is an integer number (503460877750).

Almost surely, 2^{2011122100111} is an apocalyptic number.

2011122100111 is a deficient number, since it is larger than the sum of its proper divisors (2721410889).

2011122100111 is an equidigital number, since it uses as much as digits as its factorization.

2011122100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721410888.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2011122100111 its reverse (1110012211102), we get a palindrome (3121134311213).

The spelling of 2011122100111 in words is "two trillion, eleven billion, one hundred twenty-two million, one hundred thousand, one hundred eleven".