111121201122109 has 8 divisors (see below), whose sum is σ = 117695248873848. Its totient is φ = 104551320760320.

The previous prime is 111121201122089. The next prime is 111121201122157. The reversal of 111121201122109 is 901221102121111.

It can be written as a sum of positive squares in 4 ways, for example, as 82417891264900 + 28703309857209 = 9078430^2 + 5357547^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 111121201122109 - 2⁷ = 111121201121981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121201122199) 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 7 ways as a sum of consecutive naturals, for example, 1041792582 + ... + 1041899239.

It is an arithmetic number, because the mean of its divisors is an integer number (14711906109231).

Almost surely, 2^{111121201122109} is an apocalyptic number.

It is an amenable number.

111121201122109 is a deficient number, since it is larger than the sum of its proper divisors (6574047751739).

111121201122109 is a wasteful number, since it uses less digits than its factorization.

111121201122109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083694975.

The product of its (nonzero) digits is 144, while the sum is 25.

The spelling of 111121201122109 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred one million, one hundred twenty-two thousand, one hundred nine".