111010101109 has 8 divisors (see below), whose sum is σ = 114849931320. Its totient is φ = 107171064000.

The previous prime is 111010101101. The next prime is 111010101149. The reversal of 111010101109 is 901101010111.

It can be written as a sum of positive squares in 4 ways, for example, as 32092931025 + 78917170084 = 179145^2 + 280922^2 .

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 111010101109 - 2³ = 111010101101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111010101092 and 111010101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010101101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93819 + ... + 480439.

It is an arithmetic number, because the mean of its divisors is an integer number (14356241415).

Almost surely, 2^111010101109 is an apocalyptic number.

It is an amenable number.

111010101109 is a deficient number, since it is larger than the sum of its proper divisors (3839830211).

111010101109 is an equidigital number, since it uses as much as digits as its factorization.

111010101109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396551.

The product of its (nonzero) digits is 9, while the sum is 16.

The spelling of 111010101109 in words is "one hundred eleven billion, ten million, one hundred one thousand, one hundred nine".