111201001 has 8 divisors (see below), whose sum is σ = 112147200. Its totient is φ = 110259072.

The previous prime is 111200989. The next prime is 111201007. The reversal of 111201001 is 100102111.

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 111201001 - 2⁹ = 111200489 is a prime.

It is a Duffinian number.

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, 69456 + ... + 71038.

It is an arithmetic number, because the mean of its divisors is an integer number (14018400).

Almost surely, 2^111201001 is an apocalyptic number.

It is an amenable number.

111201001 is a deficient number, since it is larger than the sum of its proper divisors (946199).

111201001 is a wasteful number, since it uses less digits than its factorization.

111201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 111201001 is about 10545.1885236823. The cubic root of 111201001 is about 480.8794654775.

Adding to 111201001 its reverse (100102111), we get a palindrome (211303112).

It can be divided in two parts, 11120 and 1001, that added together give a palindrome (12121).

The spelling of 111201001 in words is "one hundred eleven million, two hundred one thousand, one".