109666201 has 4 divisors (see below), whose sum is σ = 116117172. Its totient is φ = 103215232.

The previous prime is 109666199. The next prime is 109666213. The reversal of 109666201 is 102666901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102666901 = 6569 ⋅15629.

It can be written as a sum of positive squares in 2 ways, for example, as 56025225 + 53640976 = 7485^2 + 7324^2 .

It is a cyclic number.

It is not a de Polignac number, because 109666201 - 2¹ = 109666199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109666241) 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, 3225460 + ... + 3225493.

It is an arithmetic number, because the mean of its divisors is an integer number (29029293).

Almost surely, 2^109666201 is an apocalyptic number.

It is an amenable number.

109666201 is a deficient number, since it is larger than the sum of its proper divisors (6450971).

109666201 is an equidigital number, since it uses as much as digits as its factorization.

109666201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6450970.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 109666201 is about 10472.1631480798. The cubic root of 109666201 is about 478.6568367144.

The spelling of 109666201 in words is "one hundred nine million, six hundred sixty-six thousand, two hundred one".