109581101 has 6 divisors (see below), whose sum is σ = 127471950. Its totient is φ = 93926616.

The previous prime is 109581091. The next prime is 109581127. The reversal of 109581101 is 101185901.

It can be written as a sum of positive squares in only one way, i.e., 98525476 + 11055625 = 9926^2 + 3325^2 .

It is not a de Polignac number, because 109581101 - 2¹⁴ = 109564717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109581601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1118126 + ... + 1118223.

It is an arithmetic number, because the mean of its divisors is an integer number (21245325).

Almost surely, 2^109581101 is an apocalyptic number.

It is an amenable number.

109581101 is a deficient number, since it is larger than the sum of its proper divisors (17890849).

109581101 is an equidigital number, since it uses as much as digits as its factorization.

109581101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236363 (or 2236356 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 26.

The square root of 109581101 is about 10468.0992066373. The cubic root of 109581101 is about 478.5329935209.

The spelling of 109581101 in words is "one hundred nine million, five hundred eighty-one thousand, one hundred one".