211121121110109 has 32 divisors (see below), whose sum is σ = 325142429638656. Its totient is φ = 119353769187840.

The previous prime is 211121121110047. The next prime is 211121121110117. The reversal of 211121121110109 is 901011121121112.

It is not a de Polignac number, because 211121121110109 - 2⁸ = 211121121109853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121121115109) 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 31 ways as a sum of consecutive naturals, for example, 13092057 + ... + 24364814.

It is an arithmetic number, because the mean of its divisors is an integer number (10160700926208).

Almost surely, 2^{211121121110109} is an apocalyptic number.

It is an amenable number.

211121121110109 is a deficient number, since it is larger than the sum of its proper divisors (114021308528547).

211121121110109 is a wasteful number, since it uses less digits than its factorization.

211121121110109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37459745.

The product of its (nonzero) digits is 72, while the sum is 24.

The spelling of 211121121110109 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred ten thousand, one hundred nine".