12211051565109 has 16 divisors (see below), whose sum is σ = 16298842176000. Its totient is φ = 8131985565120.

The previous prime is 12211051565099. The next prime is 12211051565159. The reversal of 12211051565109 is 90156515011221.

It is not a de Polignac number, because 12211051565109 - 2⁴ = 12211051565093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211051565159) 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 15 ways as a sum of consecutive naturals, for example, 10163767 + ... + 11301515.

It is an arithmetic number, because the mean of its divisors is an integer number (1018677636000).

Almost surely, 2^{12211051565109} is an apocalyptic number.

It is an amenable number.

12211051565109 is a deficient number, since it is larger than the sum of its proper divisors (4087790610891).

12211051565109 is a wasteful number, since it uses less digits than its factorization.

12211051565109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141580.

The product of its (nonzero) digits is 27000, while the sum is 39.

The spelling of 12211051565109 in words is "twelve trillion, two hundred eleven billion, fifty-one million, five hundred sixty-five thousand, one hundred nine".