109110121 has 8 divisors (see below), whose sum is σ = 109892520. Its totient is φ = 108331008.

The previous prime is 109110101. The next prime is 109110163. The reversal of 109110121 is 121011901.

It can be written as a sum of positive squares in 4 ways, for example, as 35236096 + 73874025 = 5936^2 + 8595^2 .

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 109110121 - 2⁷ = 109109993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109110095 and 109110104.

It is not an unprimeable number, because it can be changed into a prime (109110101) 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, 116985 + ... + 117913.

It is an arithmetic number, because the mean of its divisors is an integer number (13736565).

Almost surely, 2^109110121 is an apocalyptic number.

It is an amenable number.

109110121 is a deficient number, since it is larger than the sum of its proper divisors (782399).

109110121 is an equidigital number, since it uses as much as digits as its factorization.

109110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 109110121 is about 10445.5790169813. The cubic root of 109110121 is about 477.8464300703.

The spelling of 109110121 in words is "one hundred nine million, one hundred ten thousand, one hundred twenty-one".