20111021120011 has 8 divisors (see below), whose sum is σ = 20133972433440. Its totient is φ = 20088070435008.

The previous prime is 20111021120009. The next prime is 20111021120059. The reversal of 20111021120011 is 11002112011102.

It is a happy number.

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 20111021120011 - 2¹ = 20111021120009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20111021119973 and 20111021120000.

It is not an unprimeable number, because it can be changed into a prime (20117021120011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100500925 + ... + 100700833.

It is an arithmetic number, because the mean of its divisors is an integer number (2516746554180).

Almost surely, 2^{20111021120011} is an apocalyptic number.

20111021120011 is a deficient number, since it is larger than the sum of its proper divisors (22951313429).

20111021120011 is a wasteful number, since it uses less digits than its factorization.

20111021120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314213.

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

Adding to 20111021120011 its reverse (11002112011102), we get a palindrome (31113133131113).

The spelling of 20111021120011 in words is "twenty trillion, one hundred eleven billion, twenty-one million, one hundred twenty thousand, eleven".