109412217 has 12 divisors (see below), whose sum is σ = 159670420. Its totient is φ = 72188928.

The previous prime is 109412209. The next prime is 109412227. The reversal of 109412217 is 712214901.

It can be written as a sum of positive squares in 2 ways, for example, as 74235456 + 35176761 = 8616^2 + 5931^2 .

It is not a de Polignac number, because 109412217 - 2³ = 109412209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109412227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61792 + ... + 63537.

Almost surely, 2^109412217 is an apocalyptic number.

It is an amenable number.

109412217 is a deficient number, since it is larger than the sum of its proper divisors (50258203).

109412217 is a wasteful number, since it uses less digits than its factorization.

109412217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125432 (or 125429 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 109412217 is about 10460.0294932663. The cubic root of 109412217 is about 478.2870322541.

The spelling of 109412217 in words is "one hundred nine million, four hundred twelve thousand, two hundred seventeen".