20121110011011 has 8 divisors (see below), whose sum is σ = 26828264801104. Its totient is φ = 13414014280800.

The previous prime is 20121110010983. The next prime is 20121110011069. The reversal of 20121110011011 is 11011001112102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20121110011011 - 2¹¹ = 20121110008963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121110011511) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13963816 + ... + 15337221.

It is an arithmetic number, because the mean of its divisors is an integer number (3353533100138).

Almost surely, 2^{20121110011011} is an apocalyptic number.

20121110011011 is a deficient number, since it is larger than the sum of its proper divisors (6707154790093).

20121110011011 is a wasteful number, since it uses less digits than its factorization.

20121110011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29529941.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 20121110011011 its reverse (11011001112102), we get a palindrome (31132111123113).

The spelling of 20121110011011 in words is "twenty trillion, one hundred twenty-one billion, one hundred ten million, eleven thousand, eleven".