211100122120011 has 8 divisors (see below), whose sum is σ = 284368549385424. Its totient is φ = 139282554800640.

The previous prime is 211100122120007. The next prime is 211100122120033. The reversal of 211100122120011 is 110021221001112.

It is a happy number.

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

It is not a de Polignac number, because 211100122120011 - 2² = 211100122120007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211100122120061) 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, 362714986170 + ... + 362714986751.

It is an arithmetic number, because the mean of its divisors is an integer number (35546068673178).

Almost surely, 2^{211100122120011} is an apocalyptic number.

211100122120011 is a deficient number, since it is larger than the sum of its proper divisors (73268427265413).

211100122120011 is an equidigital number, since it uses as much as digits as its factorization.

211100122120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725429973021.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211100122120011 its reverse (110021221001112), we get a palindrome (321121343121123).

The spelling of 211100122120011 in words is "two hundred eleven trillion, one hundred billion, one hundred twenty-two million, one hundred twenty thousand, eleven".