111201009 has 8 divisors (see below), whose sum is σ = 148971552. Its totient is φ = 73782240.

The previous prime is 111201007. The next prime is 111201011. The reversal of 111201009 is 900102111.

It is an interprime number because it is at equal distance from previous prime (111201007) and next prime (111201011).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111201009 - 2¹ = 111201007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111201007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87204 + ... + 88469.

It is an arithmetic number, because the mean of its divisors is an integer number (18621444).

Almost surely, 2^111201009 is an apocalyptic number.

It is an amenable number.

111201009 is a deficient number, since it is larger than the sum of its proper divisors (37770543).

111201009 is a wasteful number, since it uses less digits than its factorization.

111201009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175887.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 111201009 is about 10545.1889030022. The cubic root of 111201009 is about 480.8794770093.

The spelling of 111201009 in words is "one hundred eleven million, two hundred one thousand, nine".