110121202110109 has 4 divisors (see below), whose sum is σ = 110121232788540. Its totient is φ = 110121171431680.

The previous prime is 110121202109983. The next prime is 110121202110137. The reversal of 110121202110109 is 901011202121011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89684744861209 + 20436457248900 = 9470203^2 + 4520670^2 .

It is a cyclic number.

It is not a de Polignac number, because 110121202110109 - 2³⁵ = 110086842371741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 110121202110109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110121202110149) 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 3 ways as a sum of consecutive naturals, for example, 9112324 + ... + 17414845.

It is an arithmetic number, because the mean of its divisors is an integer number (27530308197135).

Almost surely, 2^{110121202110109} is an apocalyptic number.

It is an amenable number.

110121202110109 is a deficient number, since it is larger than the sum of its proper divisors (30678431).

110121202110109 is an equidigital number, since it uses as much as digits as its factorization.

110121202110109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30678430.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 110121202110109 in words is "one hundred ten trillion, one hundred twenty-one billion, two hundred two million, one hundred ten thousand, one hundred nine".