2211110111009 has 4 divisors (see below), whose sum is σ = 2211130216980. Its totient is φ = 2211090005040.

The previous prime is 2211110110987. The next prime is 2211110111027. The reversal of 2211110111009 is 9001110111122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1684219950625 + 526890160384 = 1297775^2 + 725872^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211110111009 - 2⁸ = 2211110110753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211110111059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9887114 + ... + 10108275.

It is an arithmetic number, because the mean of its divisors is an integer number (552782554245).

Almost surely, 2^{2211110111009} is an apocalyptic number.

It is an amenable number.

2211110111009 is a deficient number, since it is larger than the sum of its proper divisors (20105971).

2211110111009 is a wasteful number, since it uses less digits than its factorization.

2211110111009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20105970.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 2211110111009 in words is "two trillion, two hundred eleven billion, one hundred ten million, one hundred eleven thousand, nine".