20091100201 has 4 divisors (see below), whose sum is σ = 20174466004. Its totient is φ = 20007734400.

The previous prime is 20091100193. The next prime is 20091100207. The reversal of 20091100201 is 10200119002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5858371600 + 14232728601 = 76540^2 + 119301^2 .

It is a cyclic number.

It is not a de Polignac number, because 20091100201 - 2³ = 20091100193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20091100207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41682540 + ... + 41683021.

It is an arithmetic number, because the mean of its divisors is an integer number (5043616501).

Almost surely, 2^20091100201 is an apocalyptic number.

It is an amenable number.

20091100201 is a deficient number, since it is larger than the sum of its proper divisors (83365803).

20091100201 is an equidigital number, since it uses as much as digits as its factorization.

20091100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83365802.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 20091100201 its reverse (10200119002), we get a palindrome (30291219203).

The spelling of 20091100201 in words is "twenty billion, ninety-one million, one hundred thousand, two hundred one".