101111111110109 has 4 divisors (see below), whose sum is σ = 101111585438016. Its totient is φ = 101110636782204.

The previous prime is 101111111110003. The next prime is 101111111110127. The reversal of 101111111110109 is 901011111111101.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101111111110109 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 (101111111110129) 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, 236844059 + ... + 237270584.

It is an arithmetic number, because the mean of its divisors is an integer number (25277896359504).

Almost surely, 2^{101111111110109} is an apocalyptic number.

It is an amenable number.

101111111110109 is a deficient number, since it is larger than the sum of its proper divisors (474327907).

101111111110109 is an equidigital number, since it uses as much as digits as its factorization.

101111111110109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474327906.

The product of its (nonzero) digits is 9, while the sum is 20.

The spelling of 101111111110109 in words is "one hundred one trillion, one hundred eleven billion, one hundred eleven million, one hundred ten thousand, one hundred nine".