20641201 has 12 divisors (see below), whose sum is σ = 25276080. Its totient is φ = 16760520.

The previous prime is 20641141. The next prime is 20641207. The reversal of 20641201 is 10214602.

It is not a de Polignac number, because 20641201 - 2⁷ = 20641073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20641207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10155 + ... + 12016.

It is an arithmetic number, because the mean of its divisors is an integer number (2106340).

Almost surely, 2^20641201 is an apocalyptic number.

It is an amenable number.

20641201 is a deficient number, since it is larger than the sum of its proper divisors (4634879).

20641201 is a wasteful number, since it uses less digits than its factorization.

20641201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22204 (or 22197 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 20641201 is about 4543.2588524098. The cubic root of 20641201 is about 274.3121143648.

Adding to 20641201 its reverse (10214602), we get a palindrome (30855803).

The spelling of 20641201 in words is "twenty million, six hundred forty-one thousand, two hundred one".