20111200120011 has 32 divisors (see below), whose sum is σ = 36003267353088. Its totient is φ = 9643732323840.

The previous prime is 20111200120001. The next prime is 20111200120031. The reversal of 20111200120011 is 11002100211102.

It is not a de Polignac number, because 20111200120011 - 2¹⁹ = 20111199595723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20111200120001) 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 31 ways as a sum of consecutive naturals, for example, 3348515166 + ... + 3348521171.

It is an arithmetic number, because the mean of its divisors is an integer number (1125102104784).

Almost surely, 2^{20111200120011} is an apocalyptic number.

20111200120011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20111200120011 is a deficient number, since it is larger than the sum of its proper divisors (15892067233077).

20111200120011 is a wasteful number, since it uses less digits than its factorization.

20111200120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6697036371.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20111200120011 its reverse (11002100211102), we get a palindrome (31113300331113).

The spelling of 20111200120011 in words is "twenty trillion, one hundred eleven billion, two hundred million, one hundred twenty thousand, eleven".