11111010101109 has 12 divisors (see below), whose sum is σ = 16993309566636. Its totient is φ = 6971614180992.

The previous prime is 11111010101089. The next prime is 11111010101119. The reversal of 11111010101109 is 90110101011111.

It can be written as a sum of positive squares in 2 ways, for example, as 9251665139025 + 1859344962084 = 3041655^2 + 1363578^2 .

It is not a de Polignac number, because 11111010101109 - 2¹¹ = 11111010099061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11111010101091 and 11111010101100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111010101119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36310490374 + ... + 36310490679.

It is an arithmetic number, because the mean of its divisors is an integer number (1416109130553).

Almost surely, 2^{11111010101109} is an apocalyptic number.

It is an amenable number.

11111010101109 is a deficient number, since it is larger than the sum of its proper divisors (5882299465527).

11111010101109 is a wasteful number, since it uses less digits than its factorization.

11111010101109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72620981076 (or 72620981073 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 18.

The spelling of 11111010101109 in words is "eleven trillion, one hundred eleven billion, ten million, one hundred one thousand, one hundred nine".