109123121 has 8 divisors (see below), whose sum is σ = 112353120. Its totient is φ = 105924672.

The previous prime is 109123117. The next prime is 109123123. The reversal of 109123121 is 121321901.

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 109123121 - 2² = 109123117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109123093 and 109123102.

It is not an unprimeable number, because it can be changed into a prime (109123123) 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, 776 + ... + 14793.

It is an arithmetic number, because the mean of its divisors is an integer number (14044140).

Almost surely, 2^109123121 is an apocalyptic number.

It is an amenable number.

109123121 is a deficient number, since it is larger than the sum of its proper divisors (3229999).

109123121 is a wasteful number, since it uses less digits than its factorization.

109123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15775.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 109123121 is about 10446.2012712756. The cubic root of 109123121 is about 477.8654070966.

The spelling of 109123121 in words is "one hundred nine million, one hundred twenty-three thousand, one hundred twenty-one".