18112201 has 8 divisors (see below), whose sum is σ = 19361664. Its totient is φ = 16901280.

The previous prime is 18112189. The next prime is 18112207. The reversal of 18112201 is 10221181.

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 18112201 - 2⁵ = 18112169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18112207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8661 + ... + 10546.

It is an arithmetic number, because the mean of its divisors is an integer number (2420208).

Almost surely, 2^18112201 is an apocalyptic number.

It is an amenable number.

18112201 is a deficient number, since it is larger than the sum of its proper divisors (1249463).

18112201 is a wasteful number, since it uses less digits than its factorization.

18112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19271.

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 18112201 is about 4255.8431597041. The cubic root of 18112201 is about 262.6175485628.

Adding to 18112201 its reverse (10221181), we get a palindrome (28333382).

The spelling of 18112201 in words is "eighteen million, one hundred twelve thousand, two hundred one".