111011010109 has 4 divisors (see below), whose sum is σ = 111205425760. Its totient is φ = 110816594460.

The previous prime is 111011010101. The next prime is 111011010113. The reversal of 111011010109 is 901010110111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 901010110111 = 71 ⋅12690283241.

It is a cyclic number.

It is not a de Polignac number, because 111011010109 - 2³ = 111011010101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111011010092 and 111011010101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111011010101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97206969 + ... + 97208110.

It is an arithmetic number, because the mean of its divisors is an integer number (27801356440).

Almost surely, 2^111011010109 is an apocalyptic number.

It is an amenable number.

111011010109 is a deficient number, since it is larger than the sum of its proper divisors (194415651).

111011010109 is an equidigital number, since it uses as much as digits as its factorization.

111011010109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194415650.

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

The spelling of 111011010109 in words is "one hundred eleven billion, eleven million, ten thousand, one hundred nine".