20118201 has 4 divisors (see below), whose sum is σ = 26824272. Its totient is φ = 13412132.

The previous prime is 20118193. The next prime is 20118223. The reversal of 20118201 is 10281102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20118201 - 2³ = 20118193 is a prime.

It is a super-2 number, since 2×20118201² = 809484022952802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20118401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3353031 + ... + 3353036.

It is an arithmetic number, because the mean of its divisors is an integer number (6706068).

Almost surely, 2^20118201 is an apocalyptic number.

It is an amenable number.

20118201 is a deficient number, since it is larger than the sum of its proper divisors (6706071).

20118201 is an equidigital number, since it uses as much as digits as its factorization.

20118201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706070.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 20118201 is about 4485.3317603049. The cubic root of 20118201 is about 271.9754564431.

Adding to 20118201 its reverse (10281102), we get a palindrome (30399303).

The spelling of 20118201 in words is "twenty million, one hundred eighteen thousand, two hundred one".